Oils for 6.0 Powerstroke: 15W-40, 5W-40, 0W-40 – Which is the Best? [2022]

Motor oil replacement is known to be seasonal. When cold weather approaches, many drivers will have a headache – they need to choose oil for winter. Winter operation is a severe test for a vehicle’s engine.

Rapid temperature drops, impact loads during cold starts in freezing weather, large amounts of road salt in a blend with the tiniest particles of sand in the engine – all this imposes special requirements to engine oil in winter operation.

It so happens that “winter” preference is traditionally given to “semi-synthetic.” Why? Many car owners justify it by the moderate price of oils of this group, with a sufficiently high level of quality. Moreover, there is a widespread opinion that semi-synthetic motor oil is the best option for any season. Is it right?

Let’s make this clear at once – despite the widespread popularity of semi-synthetic oils, it is worth noting that “semi-synthetic” is, however, a more or less successful compromise between price and quality, depending on the oil composition and quality level of a particular brand.

The main thing for engine oil in winter is high cold start characteristics and maximum thermal/chemical stability. Mineral engine oils are able to provide standard starter crankshaft “turnability” at engine start, up to a temperature not lower than 5F/-4F. But it can be much colder in North Dakota! Synthetic oils retain excellent cold start characteristics from -22F to -40F.

At the same time, according to various engine test results, using synthetic oils with viscosity grade SAE 5W-40, engine part wear at cold starts at -4F will be about 200 times lower than when using mineral engine oil SAE 15W-40! A cold start with mineral oil in such weather equals to 125-190 run miles. Multiply this by cold starts, and you will get an impressive economy on “synthetics.”

How do semi-synthetic oils look like here? To start with, the share of synthetic components in such oils does not exceed 10-30%. All the rest is mineral oil and additives. Naturally, with such a percentage of components, you should not expect any sharp improvement in cold resistance and starting characteristics of “semi-synthetics” in comparison with quality mineral motor oils.

Starting qualities of semi-synthetic motor oils are only 5F better than those of mineral motor oils. Plus, the congelation temperature of SAE 15W-40 and SAE 10W-40 oils is practically the same!

Besides, semi-synthetic motor oils practically do not differ much from mineral oils (such as CBD oil for allergies for instance) in their resistance to oil base damage. And if in summer, this difference is more or less noticeable, then in severe winter conditions, the difference actually goes to zero.

Still, we should admit that the best oil for winter is fully synthetic. How do such oils differ from mineral and semi-synthetic?

The difference is mainly in the molecular structure of the oil base. In the process of synthetic oil production, molecules with the set, optimal operating properties are “built” (synthesized). Synthetic oils, in contrast to mineral oils, have maximum chemical and thermal stability.

Chemical stability means that when synthetic oils operate in the engine, there are almost no chemical transformations (oxidation, aging, etc.) that degrade its performance and lead to its destruction.

Thermal stability is the preservation of the optimal oil viscosity value in a wide temperature range, an easy and safe cold start, and at the same time, maximum engine protection in its highest temperature zones at high speeds and loads.

Due to the peculiarities of their molecular structure, synthetic oils have higher (compared to mineral and semi-synthetic) fluidity and penetration ability. Enough to say that the full synthetic oil engine lubrication process at cold starts does not exceed 40-50 seconds, while standard mineral oils can require several dozens of minutes!

Thus, by using really high-quality synthetic engine oils, you will protect your engine and provide a truly long service life.

Types of Engine Oil

  • Semi-synthetic oil is a lubricant which has mineral substances, produced as a result of oil refining, added to its composition in minimal quantities.
  • Fully synthetic oil is a lubricant, the lubricating substances which are fully obtained as a result of oil refining.
  • Mineral oil is a lubricant where materials are produced by purification of oil, unlike other groups where lubricants are created artificially in laboratory conditions.
  • Hydrocracking oil is a lubricant that contains improved lubricating minerals.

Recommended Temperature Ranges

Min. cold start temp / viscosity class / max. ambient temperature

  • -31F or lower – 0W-30 – 77F / 0W-40 – 86F;
  • -22F – 5W-30 – 77F / 5W-40 – 95F
  • -13F – 10W-30 – 77F / 10W-40 – 95F
  • -4F – 15W-40 – 113F
  • 5F – 20W-50 – 113F or higher

0W-40, 5W-40, and 15W-40 Difference

The main parameter of engine oil is its viscosity or fluidity. According to the classification of the Society of Automotive Engineers (SAE), the binary number in the designation of engine oils means that these oils are all-season. Most car owners usually prefer such oils because of their versatility.

The first index, e.g., 5W, characterizes oil viscosity at low temperatures. The lower the temperature, the more the oil thickens, and the harder it is to pump. The second digit indicates the high temperature of the oil. High viscosity, in this case, provides the oil film formation on friction parts of the engine.

In terms of numerical values, motor oils differ only in terms of the high-temperature viscosity index. For 5W-30, this value ranges from 9.3 to 12.6 mm2/s and for 5W-40, from 12.6 to 16.3 mm2/s.

However, we must not forget that viscosity affects the overall performance of the engine and depends very much on its design. Here again, it should be noted that when choosing the best option, you should follow the manufacturer’s instructions and use oil with the recommended viscosity and required approvals.

If your truck’s engine is designed for 5W-30, 5W-40 will increase the load on the oil pump and increase friction. This will also reduce oil consumption in the oil system, because the higher the viscosity, the higher the hydraulic resistance, which means that the operating point of the pump and system begins to operate towards lower flow rates.

This results in engine wear and oil starvation. Conversely, if you use 5W-30 instead of the manufacturer’s recommended 5W-40, the oil will be too liquid for your engine, and the film will not hold well in the piston-cylinder tribosystem, which will also cause wear.

Typically, most manufacturers recommend 5W-40 oil, as “40” is the average parameter. Oils with “30” are mainly designed for new cars, and with “50” – for vehicles with high mileage.

As a whole, the following can be distinguished for compared samples in the form of basic characteristics:

  • at average engine oil temperature, the viscosity of 5W40 is 1.5 higher than 5W-30;
  • 5W-40 is designed to operate with modern internal combustion engines characterized by their high thermal stress. This oil retains its viscosity properties well. When high shear rates and
  • temperatures are present in various areas of the engine, the oil successfully holds the film, preventing friction;
  • the temperature range of 5W-30 is shifted downwards compared to 5W-40. This means that the oil has a lower viscosity and provides a more effective result at cold starts, but at high
  • temperatures, it becomes too fluid, which almost eliminates its lubricating properties.
  • Therefore, only the manufacturer’s recommendations should be taken into account, and engine oil should be selected according to these recommendations.

0W-40 marked oil is a more practical material for a car, compared to 5W-40. 0W-40 is produced through synthesis and the most complex chemical formulas. For this reason, the content has improved formula and higher viscosity. Therefore, this lubricant does not come into harmful contact with engine parts, no oxidation processes, etc.

So, we can say that even a new ice age won’t stop you from starting the engine with 0W-40. And there is also no need to change it before summer, unless, of course, your climate is too hot. With this oil, the engine feels confident even in case of overheating. That is, if in summer (not too hot), you will use 0W-40 instead of 15W-40, the engine will not feel any difference.

Winters with lower than -4F ambient temperatures will, however, make you switch to 0W-40 anyway. Besides, few people consider 0W-40’s fuel economy benefits. Keep in mind minimum and maximum oil temperatures: -4F/113F for 15W-40 and -31F/86F for 0W-40. Consider your climate.

The main disadvantage of 0W-40 is, of course, the highest price of all motor oils on the market. For this reason, if you cannot buy 0W-40, the best choice is 5W-40 or 15W-40.

The List of Top-Rated Oils for 6.0 Powerstroke:

Ford XO-15W40-5QSD Ford XO-15W40-5QSD15W-404.73 LView on Amazon
AMSOIL DMEQTLiqui Moly 23325W-405 LView on Amazon
Shell Rotella T5 550045348 Shell Rotella T5 55004534815W-403.785 LView on Amazon
Delo 222290388 Delo 22229038815W-403.785 LView on Amazon
Mobil Super 96819 Mobil Super 9681915W-403.78 LView on Amazon
Valvoline Advanced Full Synthetic SAEValvoline Advanced Full Synthetic SAE5W-304.73 LView on Amazon
Royal Purple 44154 Royal Purple 4415415W-403.785 LView on Amazon
Valvoline VV773780-03 Valvoline VV773780-0315W-403.78 LView on Amazon
Castrol 03101 Castrol 031010W-404.73 LView on Amazon
Valvoline 852518 Valvoline 8525180W-40946 mlView on Amazon
Mobil 1 120760-2PK Mobil 1 120760-2PK0W-404.73 LView on Amazon
Royal Purple 06484-6PK Royal Purple 06484-6PK0W-40946 mlView on Amazon
Liqui Moly 2050-4PK Liqui Moly 2050-4PK0W-405 LView on Amazon

How much oil do you need? How to check the oil level and its condition?

6.0 Powerstroke holds 15 quarts of oil. So it needs almost 4 gallons of oil.

Park your vehicle on a flat surface (without any slopes or pits) and shut off the engine. Accurate measurement is only possible when the liquid is evenly distributed in the pallet.

Take a look at the manual. Most car enthusiasts have trouble checking the oil level on a cold or hot engine. Although most people recommend that you measure the engine oil level when it’s cool, otherwise, wait 15 to 20 minutes so the lubricant can flow into the crankcase – this will make it less viscous.

Not many people stumble on this step, but still. After pulling out the dipstick for the first time, you should wipe it thoroughly with a cloth that does not leave any small hairs. Next, place the stick back in, insert it fully, wait 5-10 seconds, and then pull it out again.

Now you should see the oil level. It should be somewhere in the middle of the hash marks or closer to the higher mark. If it’s higher, you are overfull.

Many people wrongly assume that the “right” engine oil level is max. or even a little higher. Wrong. Ideally, oil traces should end between the “minimum” and “maximum” hashmark, closer to the latter – that’s when you can safely close the hood.

If you’re checking the level right after an oil change, add new oil about one qt less to where you think the capacity is. Start the engine and let it idle for a minute. Shut it down, and let it chill for 5 minutes. This will make the new oil black enough to make it visible enough on the dipstick.

It would be best if you let the truck sit for a bit to ensure most of the oil is back in the pan, and you’re getting an accurate reading. After it’s rested, pull the dipstick out, wipe it off, insert it back into the tube until it’s fully seated, wait 5-10 seconds, and then pull the dipstick out and check the consistency and color of the oil fluid.

The oil that does not need changing is yellow-green. If it is dark brown or black, has a dense or watery structure, then immediately drive the vehicle to a service station or find out how to refill the engine yourself.

Following these simple rules is essential, because violating the procedure is fraught with disinformation of the driver, and thus, the untimely problem solution. If there is too much oil, it can get in the crankcase ventilation system, engine cylinders, or catalyst.

As for the lack of oil in the engine, it is a direct way to the so-called “oil starvation.” In general, both cases lead to huge risks – whether it’s expensive repairs, or replacing the entire power unit.

You have to check your engine oil level periodically. Even if the vehicle was constantly standing in the garage, there is a high probability of leaks provoked by gasket’s abrasion, seal and hose joint damage. Therefore, a proper weekly oil check will not hurt.

How often should you change your oil in Powerstroke 6.0?

As stated on powerstrokehub.com:

7,500 miles/6 months under normal operating conditions.
5,000 miles/6 months under severe duty conditions.

Powerstroke 6.0 oil temperature range. Standard reasons for high oil temperatures.

220-250 degrees. However, the perfect oil temperature for 6.0 is 200 degrees. The difference between ECT and EOT should be not more than 15 degrees (OC efficiency) at 60 mph, unloaded, on flat terrain.

The oil temperature depends on how/where you drive the truck. Extreme conditions, fast driving, bumpy roads, slopes or hills make the engine work harder, which directly affects the oil temperature.

  • The first reason for the high oil temperature is a bad oil cooler. You should check if it’s clogged or buy a new, bigger one (Motorcraft filters are good).
  • Also, check your oil pressure gauge is operating right.
  • Check if the EOT and EOC are the same. They should be.
  • You may also need a coolant filter as well.

You should monitor both the oil and coolant temps together – the one doesn’t make a lot of sense without the other.

Review of the Best Oils for 6.0 Powerstroke:

Ford XO-15W40-5QSD — Best Oil for 6.0 Powerstroke (Ford Recommended)

Ford XO-15W40-5QSD

The first light, heavy-duty engine oil on the list is recommended for Powerstroke by Ford itself! That’s why the reason it’s our top-priority engine oil is obvious.

Whether you own a truck, bus, or use your Powerstroke 6.0 in any other applications, Motorcraft 15W-40 Super Duty Diesel Engine Oil will save your engine from dirt and keep it clean in a regular/warm climate for many years with no problems. You can also get Motorcraft 5W-40 engine oil for colder climates, by the way.

It’s kind of pricey but you get what you expect from high-quality oil. Motorcraft SAE 15W-40 is a blend of high-class hydro-processed base oils and additive technology. All manufacturer requirements are met, and you can even use this oil in older engine models with recommended API categories CD, CF-4, CG-4, CH-4, CI-4, CI-4 Plus.

Besides, it provides outstanding performance in previous-generation diesel engines running on fuel with high sulfur content.

Motorcraft SAE 15W-40 Super Duty Diesel Motor Oil is specially designed for new diesel engines with low emission, providing excellent control of soot deposits, as well as superior protection against wear, sediment, corrosion, foaming, sludge formation, oil oxidation at high temperatures, and thickening.

This oil protects the exhaust system such as particulate filters (DPF) and meets the 2007 exhaust emission standards.

Motorcraft SAE 15W-40 Super Duty Diesel Motor Oil is suitable for gear shifting applications where the clutch is not engaged, where Allison C-4 quality level fluid is required.


  • Recommended by Ford for Powerstroke
  • Provides control of soot deposits, as well as protection against wear, the formation of deposits, rust/corrosion, foaming, sludge formation, oil oxidation at high temperatures, and thickening
  • Protects the exhaust system, such as DPF filters
  • Provides excellent performance in previous-generation diesel engines running on fuel with high sulfur content
  • Based on high-quality hydrotreated base oil with the addition of a unique additive complex.
  • Available in 1-quart or 5-quart bottles or 55-gallon bulk quantities

Liqui Moly 2332 — Best Aftermarket Oil for 6.0 Ford

Liqui Moly 2332

Liqui Moly 2332 Leichtlauf High Tech 5W-40 Engine Oil – 5 Liter is a German product. It is a high-quality oil that is purely synthetic. The product gives your vehicle better performance to operate in all conditions. It is, therefore, top-class engine oil with low-friction. It is ideal for both diesel and petrol engines.

This engine oil increases the service life of your engine since it protects it against wear. It is mixable and compatible with other commercially-available engine oils. Liqui Moly 2332 provides your engine with exceptional cleanliness as it is tested with catalytic converters and its performance proved with turbochargers.

The oil also helps you to save fuel and reduces pollutant emissions. It delivers high-lubrication, low temperatures and is reliable either at high or low-temperature conditions.

This product will save your time and expand your engine’s service life. It will eliminate deposits, reduce oil consumption and repairs, and most importantly, reduce dependence on foreign oil.

Designed for gasoline and diesel engines with or without turbocharging, installed in trucks, light trucks, commercial vehicles, personal cars, industrial pumps, and generators.


  • Compatible with other commercially-available engine oils
  • Increases fuel economy
  • High lubrication reliability
  • Improves engine performance
  • The only diesel oil designed for extended intervals under load.
  • It provides outstanding wear protection over a wide range of operating temperatures.
  • Naturally resistant to oxidation and the effects of soot contamination.
  • Combines high-quality base oils and boosted detergent/dispersant additives.
  • Keeps soot particles suspended independently, helping prevent the formation of larger, wear-causing particles.
  • Compatible with other conventional and synthetic engine oils. Mixing will, however, shorten the performance benefits
  • Controlled soot-related wear
  • Low volatility


  • Weighs 9.9 pounds
  • Brand: Liqui Moly
  • Model: 2332
  • Dimensions: 13 x 10 x 3.5 inches


  • BMW Longlife-01
  • MB-Approval 229.5
  • Porsche A40
  • Renault RN 0700, 0710
  • VW 502 00/505 00

Shell Rotella T 550045348 — Oil for F250 Powerstroke

Shell Rotella T 550045348

Being one of the best oils on the market right now, Rotella T5 is merely a fountain of protective and efficient features! The oil consists of synthetic base oils and an advanced additives blend for outstanding protection against wear, deposits, corrosion, and oxidation at high temperatures.

This oil will extend your engine’s life for sure and effectively fight against soot, contamination, and other unwanted impurities. It resists high-temperature decomposition, providing long-term protection over the entire change interval. The oil offers reliable pumpability when starting in cold climates as well, remaining thick enough at high temperatures.

Fuel economy saves up to 2%, compared to the regular 15W-40, resulting in fewer operating costs. Besides, Rotella T5 provides an average of 40% better than the maximum CK-4 wear requirements.

Rotella T5 will reach critical engine parts faster and minimize wear, making it easier to operate in harsh environments. The low ash composition helps protect exhaust catalysts and particulate filters found in the latest low emission vehicles. The oil also prevents blockages in exhaust pre-cleaning devices, ensuring environmental compliance and engine energy efficiency.

Rotella is suitable for a wide range of all engines that require API CK-4, CJ-4, CI-4, or CH-4 diesel oil in this viscosity grade.


  • Model – T5
  • SAE – 15W-40
  • Capacity – 1 gal (3.785 L)
  • T5 Synthetic blend technology
  • Drastically improves performance
  • Advanced low-ash formulation
  • Maintains engine fuel efficiency
  • Reduces fuel consumption
  • Improves cold starting and low-temperature performance
  • Improved engine cleanliness
  • 37% better wear protection than CK-4 specs require
  • 55% better deposit control than CK-4 15W-40 oil
  • Piston deposits protection
  • Maintains optimum oil pressure in the engine
  • Resists viscosity loss
  • Engine and components reliability
  • Extended oil drain intervals
  • Meets major US low emission requirements


  • API CK-4, CJ-4, CI-4 PLUS, CI-4, CH-4
  • Caterpillar ECF-2/ECF-3
  • Cummins CES 20086
  • Detroit Fluid Specification (DFS) 93K222, 93K218
  • Ford WSS-M2C171-F1
  • MACK EO-S – 4.5, 4.0
  • VDS-4.5, 4.0


Q: What is Rotella T5 refined from?

A: Natural gas. A refining Gas-To-Liquid (GTL) process is used to make base oils (Group III), which are a part of modern engine oils.

Delo 222290388 — Oil for 6.0 Ford Diesel Engine

Delo 222290388

Delo 400 SDE SAE 15W-40 is market-leading high-quality engine oil that exceeds the requirements of industry and engine manufacturers. This heavy-duty oil will provide the best performance for your Powerstroke 6.0! It is a premium quality oil produced in the USA, which meets all low emission engine requirements after 2007.

The oil provides significant reductions in operating costs – a unique ability to disperse soot and control wear. Besides, it creates an excellent protection of cylinders, pistons, rings, and injectors from wear and corrosion, which extends engine service life, optimizes the pressure in the combustion chamber, reduces wear and maintenance.

Chevron Delo 400 SDE SAE 15W-40 oil is aimed at maximum vehicle operation with minimum downtime. The oil is produced on the basis of ISOSYN base oils which have properties comparable with synthetic products in tests for crucial indicators.

These oils are blended with the latest technology developed dispersion, anti-wear, detergent, increasing the viscosity index and anti-foaming agents, as well as inhibitors of oxidation and corrosion.

The Chevron’s oil is specifically designed to meet the requirements of engines equipped with exhaust gas recirculation systems, while providing maximum performance for conventional engines and other types of motors, such as those manufactured with Caterpillar ACERT technology.

As mentioned before, it also prevents deposits on pistons and their heads, which reduces oil consumption. Increased soot dispersing additives keep soot suspended and, therefore, prevent filter clogging, cylinder head fouling, abrasive wear, viscosity jumps, and oil thickening, which can lead to excessive wear and bearing failure when the engine starts up.

Specially selected oxidation inhibitors prevent oxidation, fouling, and excessive oil thickening during the oil change interval. A unique set of anti-seize and anti-wear additives protects against valve-train wear and scoring of heavily loaded parts.

Specially selected additive, which increases the viscosity index, provides smooth flowability at low temperatures and excellent protection with oil film on hot spots. Foam preventing additive prevents air bubbles from getting caught in the oil.

The combination of high-quality dispersion additives and ISOSYN technology provides effective dispersion of soot in Chevron Delo 400 15W-40 oil and keeps it suspended. This reduces valve-train wear, polishing of the levers, and filter clogging.


  • Maximizes downtime – provides an extended replacement interval due to excellent motor performance and protection of exhaust systems.
  • It helps reduce exhaust emissions as much as possible – thanks to low ash content and low sulfur and phosphorus, designed to protect neutralizers and particulate filters.
  • The oil’s high thermal-oxidative stability prevents contamination of the piston zone, provides wear protection and anti-soot control.
  • Reduces maintenance and improves fuel economy.
  • Suitable for many vehicles, including those that meet previous standards from Euro VI to Euro I, as well as engines running on diesel fuel and LNG;
  • Maximum uninterrupted operation;
  • Protection of exhaust emission reduction systems;
  • Prevents engine pollution;
  • Reduced maintenance costs;
  • Suitable for a wide range of diesel engines.


  • Designed for use in harsh operating conditions of mainline vehicles with and without turbocharged diesel engines. Designed for use at extended replacement intervals with low-sulfur top-flush types.
  • Designed for use in trucks and buses equipped with gas engines.
  • Specially designed for practical use in engines with particulate filters, exhaust gas recirculation, and selective catalytic reduction systems.


  • Delo 400 SDE
  • Dimensions – 13.6″ x 12.4″ x 8.4″
  • Weight – 23.9 lbs
  • Model – 222290388
  • Exceptional quality diesel oil
  • Outstanding protection in on- and off-highway applications
  • Most recommended OEM viscosity grade
  • Made in the USA
  • Excellent emission control system life
  • Meets EGR and SCR engine requirements
  • Meets post-2007 low emission engine requirements
  • Exceeds engine manufacturers’ requirements
  • Minimized operating costs
  • Provides optimum engine service life and minimal maintenance
  • Backward compatible with previous API oil service categories and engine models
  • Perfect normal/low/ultra-low sulfur diesel fuel performance
  • Compatible with older gasoline engines
  • ISOSYN advanced technology (meets EGR soot control requirements)


  • API CI-4 PLUS, CI-4, CH-4, CG-4, CF-4, CF, CE1, CD1, SL, SJ, SH1, SG1
  • ACEA E7, E5, E3, E2
  • JASO DH-1
  • DHD-1


Q: Can it be used for gasoline engines?

A: Yes (approved for 15W/40 oils). But you have to know proper viscosity grade – check your user manual.

Mobil Super 96819 — Oil for 2004-2005 Powerstroke

Mobil Super 96819

Delvac 1300 15W-40 engine oil is an ultra-high performance blend for diesel engines that helps extend engine life in the harshest conditions, both on and off the road. The improved chemical composition of this oil provides high efficiency in modern high-performance engines with low emissions, including engines equipped with exhaust gas recirculation (EGR).

Older engines, powered by more moderate and higher sulfur content fuels, are also on the list.

Thanks to its properties, this oil exceeds the service category API CI-4 Plus, as well as the industrial specifications of JASO DH-1. Delvac 1300 15W-40 oil is recommended for a wide range of heavy-duty and harsh applications found in applications such as road transport, mining, construction, open-cast mining, and agriculture.

This oil will provide excellent protection for the most demanding engines (Powerstroke, Caterpillar, Cummins, Detroit Diesel, Mack, Mercedes Benz, Navistar, Volvo, etc.). Delvac 1300 15W-40 oil also meets API SL specifications for gasoline engines and mixed fleets.

The oil is the result of extensive joint development with most OEMs and the use of an improved package of chemical additives with patented Trimmer technology. These improvements ensure excellent control of oil thickening due to fouling and higher temperatures and provide superior resistance of engine parts to oxidation, corrosion, wear, and high-temperature deposits.

Modern high-performance, low-emission engines generate higher soot and run at higher temperatures than older, non-surge engines, which significantly increase the requirements for engine lubrication oils. Modern engine designs reduce oil consumption, resulting in lower costs when filling with oil to rebuild additive stocks.

Upper piston rings are located higher on the piston, bringing the lubricant layer closer to the combustion chamber, where higher temperatures increase the thermal stress on the lubricant.

Higher fuel injector pressures and slower synchronization improve exhaust emission control but also increase engine temperatures and soot coverage, including those engines that operate with exhaust gas recirculation (EGR).


  • Recommended for use in high-performance diesel systems, including the latest turbocharged engines, designs with low emissions, as well as engines with exhaust gas recirculation technology (EGR).
  • On the highway, both for high speed / high load transport and for short-distance deliveries;
  • Off-road, low speed/high load conditions;
  • Recommended for use in high-performance gasoline engines, mixed fleets, American and Japanese diesel equipment, heavy trucks, off-road (construction, mining, and agricultural applications), and transmissions that require Allison C-4 (SAE 15W-40).


  • Cummins CES 20078 / 20076 X X
  • Cummins CES 20077 X
  • Mack EO-N Premium Plus 03 X
  • Mack EO-M Plus X X
  • Mercedes Benz 228.3 X
  • Volvo VDS-3, VDS-2 X X


  • Dimensions – 16.8″ x 11.8″ x 9.6″
  • Weight – 30.9 pounds
  • Viscosity, ASTM D 445
  • Santistocci, at 40?C 74 123
  • Santistocks, at 100?C 11.5 15.6
  • CCS, cP, ASTM D 5293 6500 at -25?C 6000 at -20?C
  • MRV, cP, ASTM D 4684 24,000 at -30°C 29,000 at -25°C
  • HTHS at 150?C, cP, ASTM D4683 3.5 4.3
  • Viscosity rating, ASTM D 2270 145 133
  • Sulfated ash, % by weight, ASTM D 874 1.3 1.3
  • Total base number, mg KOH/g, ASTM D 2896 12 12
  • Solidification temperature, ?C, ASTM D 97 -30 -30
  • Flashing point, ?C, ASTM D 92 229 230
  • Density at 15?C kg/l, ASTM D 4052 0.866 0.879


  • Excellent resistance to heat and oxidation;
  • Fewer deposits at low temperatures and less precipitation at high temperatures;
  • Increased TBN stocks;
  • Improved soot management and longer oil change intervals;
  • Resistant properties and shear stability;
  • Reduced oil consumption and improved wear protection;
  • Maintains viscosity in the most severe, high-temperature conditions;
  • Excellent pumping capacity at low temperatures;
  • Easier engine start and less wear;
  • Excellent resistance to corrosion;
  • Longer life of surfaces subject to critical wear;
  • Fully backward compatible;
  • Longer valve-train and seal life;
  • Meets the required specifications of major OEMs;
  • Exceeds the latest API service categories;
  • One motor oil for use in a mixed fleet of cars;
  • High-performance commercial engine oil;
  • Excellent cold-cranking capabilities and oil pumpability at low temperatures;
  • Outstanding performance in modern, high-output, low-emission engines.
  • Efficient lubricating, cleaning, and cooling of engines
  • Fully backward compatible


Q: What kind of oil is this? Synthetic or conventional?

A: This is a conventional oil with high zinc content.

Q: Does Mobil Delvac 1300 makes the Powerstroke engine run quieter?

A: Yes.


Valvoline Advanced Full Synthetic SAE — Oil for 6.0 2003-2007 Powerstroke

Valvoline Advanced Full Synthetic SAE

Do you want your engine to run at its best? Worry not. Valvoline Advanced Full Synthetic SAE 5W-30 Motor Oil 5 QT is an excellent choice for you. As the name indicates, Valvoline Advanced SAE 5W-30 is a full synthetic oil. Synthetic oils are the best engines on the market.

It gives your engine superior protection since it fights with significant causes of engine stress, such as deposits, wear, and heat. This is enhanced by the durable anti-wear additives that stay in the oil for an extended period, providing up to 50% more wear protection.

The product has powerful antioxidants that help to resist motor oil breakdown in extreme conditions. It has other detergents that enable the engine oil to fight deposits and sludge. It adopts full synthetic formula for exceptional high and low-temperature protection. The engine oil will help you enjoy excellent engine cleanliness.


  • Weighs 9 pounds
  • Brand: Valvoline
  • Model: Advanced
  • Full Synthetic
  • Dimensions: 8.22 x 4.6 x 12.66 inches


  • Excellent wear protection
  • Less downtime
  • Strong oxidation and viscosity control
  • Strong stay-in-grade performance
  • Optimized engine durability and reliability during high mileage, hour accumulation situations.
  • Resists corrosive and abrasive wear (85% less wear compared to conventional CJ-4 oils)
  • Protects against oil aeration and foaming
  • Low ash formula
  • Excellent shear stability
  • Improved oil consumption and fuel economy
  • Excellent cold-cranking stability and low weather pumpability
  • Quieter engine run
  • Low volatility characteristics
  • Strong soot-busting, deposit-dispersing capability
  • Stays cleaner much longer
  • Trusted manufacturer

Royal Purple 44154 — Oil for Turbo 6.0 Powerstroke

Royal Purple 44154

Royal Purple 44154 API-licensed 15W-40 engine oil is a blend of high-quality synthetic base oils with patented additives that provide ultimate gasoline and diesel engine performance. Royal Purple API-licensed engine oils provide excellent wear and catalytic exhaust system protection due to the patented ZDDP additive package.

The oil also prevents metal-to-metal contact which, in turn, reduces fuel consumption. By the way, this oil is Royal Purple 15W-40 is fully compatible with ethanol-containing fuels, synthetic, and mineral engine oils.

No unique treatments are required when upgrading to Royal Purple oils – the manufacturer recommends switching to its oils after the first maintenance of your vehicle. Royal Purple meets warranty requirements of most passenger cars, light trucks, SUVs, as well as both GM Dexos1 and ILSAC GF-5 specifications.


  • Improved wear protection – an enhanced additive package prevents metal-to-metal contact.
  • Fuel economy – low friction coefficient and, as a result, reduced fuel consumption.
  • Improved protection of expensive catalytic exhaust systems – the patented ZDDP additive package optimizes catalytic exhaust systems’ service life.
  • Fully compliant with ethanol-containing fuels – the patented additive package prevents precipitation and oil starvation that can result in 20% more ethanol fuel consumption.
  • Tolerances and specifications – the patented additive complex prevents sediment formation and oil starvation, which can lead to a 20% higher consumption of ethanol-containing fuel.

Approvals and specifications

  • SN API (all viscosity)
  • ILSAC GF-5 (all viscosity)
  • ACEA A3/B3-04 (0W-40, 5W-40)
  • Chrysler MS-6395T (5W-20, 5W-30, 10W-30)
  • Ford WSS-M2C945-A (5W-20, 5W-30)
  • GM6094M (5W-20, 5W-30, 10W-30)
  • GM Dexos1 (5W-20, 5W-30)
  • Weight – 24 lbs
  • Dimensions – 15″ x 9″ x 8″


  • Perfect fit for diesel trucks
  • Superior corrosion and wear protection
  • Improved compatibility with fuels containing ethanol
  • Better protection of the expensive catalytic emission system
  • Longer engine service life
  • Improved fuel efficiency

Valvoline VV773780-03 — Oil for 2006 6.0 Powerstroke

Valvoline Premium Blue 773780

Do you want your engine to run at its best? Worry not. Valvoline Advanced Full Synthetic SAE 5W-30 Motor Oil 5 QT is an excellent choice for you. As the name indicates, Valvoline Advanced SAE 5W-30 is a full synthetic oil. Synthetic oils are the best engines on the market.

It gives your engine superior protection since it fights with significant causes of engine stress, such as deposits, wear, and heat. This is enhanced by the durable anti-wear additives that stay in the oil for an extended period, providing up to 50% more wear protection.

The product has powerful antioxidants that help to resist motor oil breakdown in extreme conditions. It has other detergents that enable the engine oil to fight deposits and sludge. It adopts full synthetic formula for exceptional high and low-temperature protection. The engine oil will help you enjoy excellent engine cleanliness.

  • Improved protection against soot. Improved protection and increased efficiency (e.g., higher TBN levels) prolong service life, reduce valve wear, and oil filter clogging at high soot levels.
    Deposit control. Control of high-temperature deposits on two-piece pistons and ring/liner wear protection.
  • Compatible with EGR systems. Recommended for engines with exhaust gas recirculation (EGR), selective catalytic reduction (SCR), and Euro IV engines, but not for engines with DPF (particulate filters).
  • Excellent acid neutralization. Special basic additives are able to neutralize harmful acids (TBN retention) for longer, thus reducing engine wear, risk of breakdowns, and maintenance costs.
  • Exceptional oxidation. The unique set of antioxidants in Premium Blue oils ensures its high efficiency.
  • Various tests demonstrate resistance to oxidation, which exceeds the requirements of API CK-4 specification by 50%.
  • Viscosity control. Premium Blue 8600 ES exceeds the latest API CK-4 viscosity specification by 80%, providing continuous engine protection.
  • Numerous tests have demonstrated the superior performance of the Premium Blue 8600 ES on piston soot and reduced filter clogging, exceeding the API CK-4 specification.


  • Weight – 24 lbs
  • Dimensions – 8.5″ x 4″ x 11″
  • SAE 15W-40
  • ACEA E3, E5, E7
  • ACEA A3, B3, B4
  • API CF/SL, CF-4, CG-4, CH-4, CI-4
  • Cummins CES 20076, 77, 78
  • Volvo VDS-3
  • MTU Type 2
  • Caterpillar ECF-2/1a
  • MB-228.3 Mack EO-M Plus
  • Renault RVI RLD/RLD-2
  • MAN M 3275
  • Global DHD-1
  • ZF TE-ML 07C


  • It has innovative anti-wear additives
  • Additional detergents
  • Superior antioxidants
  • Full synthetic formula
  • Comes in an easy-to-pour 5-qt container
  • Advanced soot control, and cold start protection
  • High-temperature deposit control
  • Piston, ring/liner wear protection
  • Long-life performance


Q: How many miles before the next Premium Blue oil change?

A: It’s best to change your oil every 8.000 miles.

Castrol 03101 — Oil for 2005 F-250 Ford Diesel

Castrol 03101

Castrol EDGE 0W-40 is a fully synthetic engine oil produced using the latest TITANIUM FST technology which provides extra strength and consistency to the oil film thanks to titanium compounds. Using Castrol EDGE 0W-40, you can be sure that your engine will run at its peak when you need it.

Castrol EDGE 0W-40 allows you to release the full potential of your vehicle’s engine.

TITANIUM FST radically changes the oil behavior under extreme loads, forming an additional shock-absorbing layer. Tests have confirmed that TITANIUM FST doubles the strength of the film, preventing tear and reducing friction for maximum engine performance. With Castrol EDGE, your vehicle is ready for any challenge, regardless of road conditions.

Castrol EDGE 0W-40 is designed for gasoline and diesel engines in vehicles where the manufacturer recommends engine oils with viscosity grade SAE 0W-40 of specifications ACEA A3/B3, A3/B4, API SN/CF or earlier. Castrol EDGE 0W-40 is approved for use by leading manufacturers of equipment.


  • It provides maximum engine efficiency in the short/long term.
  • Suppresses deposit formation by improving engine response to pushing the accelerator pedal.
  • Maintains maximum engine power over long periods at high pressure.
  • It provides an unrivaled level of motor protection in a wide range of driving conditions and temperatures.
  • Increases engine efficiency (independently confirmed).


  • ACEA A3/B4
  • BMW Longlife-01
  • Ford WSS-M2C937-A
  • MB-Approval 229.3/ 229.5
  • Porsche A40
  • VW 502 00/ 505 00
  • PSA B71 2296


  • Weight – 8.99 lbs
  • Dimensions – 3.9″ x 9.4″ x 11.8″


  • 42% better performance on eliminating power-stealing deposits
  • Outstanding engine protection
  • Ultimate wear and oxidation protection

Valvoline 852518 — Oil for 6.0 Powerstroke

Valvoline 852518

Valvoline European Vehicle SAE 0W-40 Full Synthetic Motor Oil provides exceptional performance and protection for engines with diesel and gasoline systems in vehicles of all ages, under any driving conditions, no matter normal to extreme.

Recently, the Valvoline 0W-40 has been particularly popular among car enthusiasts, and it’s absolutely justified. This product is produced using high-quality base oil and an effective additive package, which significantly improves the performance of the lubricant.

During use, the oil perfectly protects the internal mechanisms of the engine from various adverse effects associated with the vehicle’s operation in harsh conditions. It provides longer lubrication intervals and is suitable for vehicles equipped with turbochargers and neutralizers.

Using this oil, you will get reliable component protection against friction and wear. This product prevents overheating of the system and formation of sludge on the walls. The lubricating fluid of a reliable manufacturer also provides easy engine starts at low temperature.

Valvoline makes premium-class engine oils, developed on the basis of high-quality synthetic raw materials with the use of modern additives and new technologies. Motor oils meet and exceed the latest requirements of most passenger cars, light trucks (pickups, vans, SUVs), including gasoline cars, diesel engines (turbocharged or not), LPG engines, as well as industrial engines.

Valvoline oils protect the engine during cold starts and provide excellent protection under extreme operating conditions, and this particular oil is no exception.


  • Helps dispose of sludge and sediments;
  • Drastically reduces component wear;
  • Maintains stable oil characteristics;
  • Protects the entire operating temperature range – during cold starts, oil continues to flow down to -40F and can withstand high temperatures up to 500F.
  • Prevents accumulation of sediment and deposits ensuring long engine service life;
  • Provides general lubrication and wear protection for all driving styles;
  • Excellent thermal and oxidation stability offers exceptional performance over the maximum oil change interval recommended in the vehicle owner’s manual
  • Retains viscosity;
  • It provides a quick start in low-temperature conditions and the necessary protection before the engine warms up.
  • It helps increase engine life and reduces the load on components.


  • ACEA A3/B3, A3/B4
  • SAE 0W40
  • Viscosity @ 100 ?C, cSt (ASTM D445) – 12.9
  • Viscosity, @ 40 ?C, cSt (ASTM D445) – 70.8
  • Viscosity Index 186
  • Sulfated Ash, wt% (ASTM D874) – 0.8 1.34
  • Phosphorous, wt% (ASTM D4981) – 0.1
  • Total Base Number (ASTM D2896) – 12.6
  • MRV at -40?C, cP (ASTM D4684) – 21,600
  • Flash Point, ?C (ASTM D92) – 226
  • Density @ 15.6 ?C g/ml (ASTM D4052) – 0.8456
  • HTHS Vis, CP @150°C, ASTM – D4741


  • Weight – 11.8 lbs
  • Dimensions – 13.1″ x 5.8″ x 9.2″
  • Model number – 852518


  • Superior sludge and varnish deposits protection
  • Fully compatible with all conventional and leading synthetic motor oils
  • Exceptional cold/high-temperature protection through faster oil flow at start-up
  • Outstanding high-temperature protection under extreme driving conditions

Mobil 1 120760-2PK — Oil for 6.0 Powerstroke

Mobil 1 120760-2PK

Mobil 1 is the top series of Mobil engine oils. All Mobil 1 Series products are fully synthetic with the highest performance properties, providing exceptional cleaning efficiency, wear protection, and other essential performance features. With Mobil 1 0W-40 oil, the engine runs like new in all driving conditions.

This oil remains liquid at temperatures below -54°C and provides all the conditions to start the engine at all extremely low temperatures. Cleans off soot, deposits, and sludge, which is often produced at high temperatures.

Mobil 1 0W-40 Advanced Full Synthetic Motor Oil European Car Formula is recommended for modern diesel and gasoline engines in lightweight trucks, passenger cars, vans, and SUVs operating in conditions of any severity.

It is especially recommended for engines equipped with a turbocharger (both diesel and gasoline), catalytic exhaust gas neutralizer, and diesel engines with direct injection (DI).

Want to make sure that Mobil 1 FS 0w-40 engine oil is suitable for your car? We recommend that you look in the user manual and check the proposed approvals. Compare your vehicle manufacturer’s recommendations with the approval form listed in Mobil 1 FS 0W-40.

So that you don’t have any doubts, you’d better contact certified specialists, who will give you their professional advice.


  • API CF
  • VW 503.01
  • SAAB
  • GM-LL-A-025 (OPEL Long Life Service Fill)
  • GM-LL-B-025 (OPEL Diesel Service Fill)
  • FIAT 9.55535 – M2
  • FIAT 9.55535 – N2
  • FIAT 9.55535 – Z2


  • Exceeds the latest OEM and industry requirements
  • Number 1 for the finest vehicles in the world
  • Offers impressive overall performance and keeps engines exceptionally clean
  • Rapid engine protection at start
  • Great low-temperature capabilities
  • Improved fuel economy
  • Fast protection for engine wear and deposits in the most extreme conditions


Q: What kind of group is this oil in?

A: Mobil 1 is a high-quality 0W-40 is a Group IV PAO full-synthetic oil with an additive pack.

Q: Where is this oil produced?

A: Houston, Texas, USA.

Royal Purple 06484-6PK — Oil for 6.0 Powerstroke

Royal Purple 06484-6PK

With Royal Purple, you get what you expect! This oil goes beyond any requirements and surprises its users with unprecedented performance. The improved additive technology exceeds both GM dexos1 and ILSAC GF-5 specs, preventing metal-to-metal contact.

With Royal Purple API-licensed SAW 0W-40, you will keep your Powerstroke 6.0 free of corrosion and rust plus, you get better fuel efficiency due to low friction coefficient. As well as improve vehicle exhaust emissions equipment since patented additives minimize wear and harmful effects of exhaust gases.

Besides, this oil also enhances ethanol-containing fuel compatibility, preventing white sludge formation and lubrication starvation that occurs with higher gasoline-ethanol blends concentration. The case includes 6 1-quart bottles.


  • High-quality fully synthetic oil
  • Single SAE viscosity rating of 40 at average operating temperature
  • Keeps your engine components clean, lubricated, and cool providing superior protection and efficiency
  • Excellent mechanical performance compared to other motor oils,
  • Increases gas mileage
  • Reduces engine wear at extreme temperatures of extreme conditions
  • Upgrading to Royal Purple needs no special procedures
  • Compatible with mineral or other synthetic oils
  • Meets ILSAC GF-5 and Dexos1 performance requirements


Q: Does Royal Purple 0W-40 contains Synerlec in it?

A: No, this one does not have Synerlec in it. Only 5W-40 does (in the Royal Purple API-licensed oil range).

Liqui Moly 2050-4PK — Oil for 6.0 Powerstroke

Liqui Moly 2050-4PK

Many drivers consider fully synthetic oils to be the best. However, the concept of 100% “synthetics” is treated differently in different countries. Germany has a legally defined concept of synthetic oil. According to the German DIN standard, synthetic oil (“vollsynthetisches”) is defined as a 100% PAO base (PolyAlphaOlefins) and an additive package.

In other countries, the content of non-synthetic components in the synthetic oil base is allowed.

When you buy a real German product, you can be sure of its true quality. Buying LIQUI MOLY Synthoil you buy pure German “synthetics”.

Synthoil is the broadest range of genuine synthetic oils. The range includes all the most demanded viscosity grades of oils for modern engines.

Advantages of Synthoil synthetic oils are as follows:

  • Real German synthetics – 100% synthetic base;
  • Highest temperature overload resistance;
  • Highest stability against oxidation;
  • Better engine cleanliness;
  • Reliable start at low temperatures;
  • Excellent anti-friction properties;
  • High level of engine protection all year round.

Fully synthetic, lightweight engine oil for modern diesel and gasoline engines, including catalyst and turbocharged. Perfectly pumps through the lubrication system, possess energy-saving and good anti-friction properties. It allows maintaining optimal oil pressure at different temperatures and high engine speeds.

Applicable for all seasons, suitable for longer change intervals. Using Liqui Moly Synthoil Energy 0W-40 will allow saving fuel to 10% on cold starts and regular operation.

Universal for most engines operating in harsh environments. For fuel saving in harsh urban environments.

Liqui Moly Synthoil Energy 0W-40 is a modern, fully synthetic engine oil that provides increased smooth running and is designed for use throughout the year.

The combination of unusual synthetic base oils with the advanced technology of additives guarantees oil with low viscosity and high wear resistance, which with high reliability, prevents the formation of deposits, reduces losses caused by friction, and optimally protects against wear.


  • ACEA – A3/B4
  • API – CF/SM


  • BMW – Longlife-98
  • FORD – WSS-M2C937-A
  • MB – 229.3
  • PORSCHE – A40
  • VW – 502.00/505.00


  • Perfect full-synthetic oil for every season use
  • An impressive combination of advanced additive technology and unconventional synthetic-based oils for low viscosity and high shear steadiness
  • Corrosion, deposits, and sludge protection
  • Reduces metal-to-metal friction
  • High wear protection and reliable lubrication
  • Highest fuel economy
  • Fast oil supply at low temperatures
  • Optimum cold start
  • Outstanding engine cleanliness
  • Optimum oil pressure at all engine operating conditions
  • Extreme shear stability at high temperatures
  • Extremely low evaporation losses
  • Tested and approved for catalytic and turbocharged engines.
  • Made in Germany

Which Oil is Recommended for a 6.0 Powerstroke?

Obviously, it’s the one recommended by Ford which happens to be Motorcraft. However, most Powerstroke owners prefer Shell Rotella. But you should consider your manufacturer recommendations and choose what you think is more acceptable, depending on your climate, driving style, budget, and vehicle specifications.

Amsoil, Delo, Valvoline, Mobil 1, Liqui Moly are also highly popular.

How much oil pressure should a 6.0 Powerstroke have?

  • 20-25 psi hot at idle (200F oil temp);
  • 1900 rpm – 50-58 psi;
  • 58-60 psi at cruising;
  • 75+ psi at cold start.

Results may vary.

The minimum engine oil pressure specs are 82.7 kPa (12 psi) at 700 rpm, 165.5 kPa (24 psi) at 1,200 RPM and 310.3 kPa (45 psi) at 1,800 RPM with the engine at operating temperature.

In case of any deviations – check your pressure relief valve and oil pressure switch.

How to know if engine oil is diluted in 6.0 Powerstroke?

Fuel dilution occurs in any engine and it’s normal. You need to test your oil (e.g. @ polarislabs.com) and check your oil analysis report. To prevent the fuel from mixing with your oil, avoid excessive idling and make sure your fuel injector is alright.

How to change engine oil in 6.0 Powerstroke?

Make sure you have all the necessary equipment and materials before you start. You will need 15W-30 or 15W-40 engine oil, wheel chocks, a ratchet with a 36 mm socket, 3/4″ combination wrench, Motorcraft 6.0L Powerstroke oil filter with O-ring seal, drain pan, drain plug gasket, an oil funnel, newspapers, and wipes.

Before draining the oil, start the truck and leave the engine running for 1-2 minutes or go around your block to heat up the oil – this will make it easier to drain the oil. Make sure your truck is on a flat surface. Then pull the parking brake and place the chocks under the rear wheels to prevent any movements. Open the hood and disconnect the negative cable from the battery.

  • Locate the engine oil filter cover on top of the engine. Loosen the oil filter cap using the ratchet. Lift the oil filter cap to remove the filter and the O-ring attached at the bottom. Remove the filter and O-ring from the lid and dispose of both appropriately.
  • Get under the vehicle and locate the oil pan drain plug. When you find the plug, spread a newspaper and position the drain pan underneath it. Loosen the drain plug with the 36 mm socket by turning it counterclockwise. Then gently remove the plug and allow the oil to drain completely into the pan. Be careful – the motor oil can be hot. When the oil flows out (the jet will turn into separate drops), check and clean the thread of the drain plug.
  • Manually reinsert the drain plug and tighten it a quarter turn (do not overtighten or you may damage the thread and gasket) with a 3/4″ wrench. Be careful not to provoke oil leakage! If necessary, replace the drain plug gasket.
  • Replace the oil filter. Leave the pan under the machine and locate the oil filter. Loosen the oil filter with the 3/4″ wrench, turning it counterclockwise. Remove the oil filter manually. Before installing the new filter, apply some engine oil to the new gasket (check your owner’s manual) so that it does not adhere and crack. Besides, it’s also good protection against oil leaks. Finally, install and fix the new filter manually.
  • It’s time to fill the engine with new oil. Open the filler cap on the passenger side of the truck, next to the firewall. Plug the oil funnel into the socket to avoid splashing and pour 15 liters of 15W-40 into the tank when the operating temperature is over 30F, or 15W-30 if the temperature is below 30F.
  • Almost there. But you should still check the oil level. To do this, shut down the engine, take out and wipe the dipstick. Put it in and pull it out to make sure the oil level is fine.
  • Close the drain pan and remove it from under the car. Connect the negative contact cable to the battery and start the engine. Allow the engine to run for a few minutes and then check for leaks. Check the engine oil level again with an engine oil dipstick. Close the lid.
  • Pour the used oil into an old container or other suitable storage container and put the old filter in a plastic bag. Dispose of dirty newspapers and wipes. Now you and your car can both go on the road.

The best way to get rid of the old engine oil is to recycle it. Many service stations and replacement points accept old oil and oil filters free of charge.

Why do car manufacturers recommend this or that type of oil for a particular vehicle model? What are the grounds?

Based on a database for testing specific oil on their engines. No manufacturer will test all the existing oils, it makes no sense.

How justified is the use of proven high-quality oils in everyday life?

It follows from the test results that switching from a simple mineral to high-quality synthetics guarantees a 5-6% reduction of fuel consumption, reduced wear, and major repair delay, as well as an easier cold start, and an overall increase in engine reliability.

Is the use of seasonal oils (summer/winter) justified in modern conditions?

This separation makes sense for commercial vehicles with high mileage when the oil has time to work out its resource during the season and must be replaced. Moreover, frequent oil changes and large refueling volumes result in the price becoming an important saving factor.

Why, with having the API, ACEA, etc., quality systems, do we still need manufacturer’s approvals?

This is, basically, a common conflict of interests between the manufacturer (oiler) and the consumer (engine specialist). All the accepted quality systems, somehow, contain requirements for physical and chemical parameters of engine oils. And engine specialists (motorists) need the oil to work conscientiously in the engine throughout its life, from change to change.

Therefore, parameters like the level of high- and low-temperature deposits, wear protection, energy efficiency, compatibility with catalysts, oxidative stability, and tendency to sludge formation, are important for them.

It’s all strictly individual, in different motors the same oil can act differently. That’s why automobile companies test engine oils in their engines and issue approvals based on the results.

By the way, automotive companies have much tougher approval requirements than those of oil producers, which is understandable in human terms.

Will Liqui Moly Synthoil Energy 0W-40 work for me?

A Liqui Moly Synthoil Energy 0W-40 canister has a certain marking on it. If you know the markings, you will quickly decide whether or not this oil is suitable for your vehicle.
Most of the time, these markings contain all the necessary information.

Why is my oil pressure light on?

Always check your oil level. If the Low Oil Light comes on when the oil level in the engine is fine, then a faulty oil pressure sensor may be the one to blame. You need to change it. When this sensor goes bad, it will start to give false readings.

How does oil pressure regulator work?

The oil pressure regulator includes a special spring that gets compressed as the engine runs. When the oil pressure goes up, the spring is compressed harder and the oil pressure gets reduced to a more suitable level for vehicle operation.


  • Ford indicates their recommended oils on the filler cap and in the owner’s manual.
  • Go with whatever your Ford Owners Manual says for your area of the country.

If you need to compare Rotella with Motorcraft 15W-40, the latter is more expensive fully synthetic oil which you can find on Amazon. Some truck owners also claim that Supertech 15W-40 is better than non-synthetic Rotella in terms of content.


About the author

Jeff Glucker

Jeff Glucker is a longtime editor and columnist at MechanicFAQ.com. He’s a proud Delaware native and currently lives in Wilmington. When he’s not writing about cars, he’s driving them. And when he’s not driving them, he’s probably doing something else like spending time with his wife or yelling on his children because you need to do that too. You can follow him on Twitter @JGlucker

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