What is the Oil Additive?
Engine oil additive serves to enhance the lubrication properties of base oil. It also helps to eliminate the bad qualities of oil while improving the good ones.
So, how do you know which ones actually work, and which ones are hype? Well, that’s where I come in. Today, I want to share with you some of the most effective oil additives on the market that I’ve come across. No matter how old or new your vehicle is, these entries are sure to impress you. They offer so many benefits that make them worth their weight in gold. Black gold.
If you’re experiencing knocking or ticking, there’s an additive here for you. If you’re just trying to get the most out of your oil life, you’ll find that, too. The majority of those that I tested are safe to use in both gas and diesel engines. But always be sure to read the manufacturer’s product information when trying any new additive. You don’t want to risk putting anything into your engine that isn’t meant for it.
So with that, let’s take a quick comparative look at our entries. Here, you’ll find an overview of what each brand does, as well as their application.
List of Top-Rated Oil Additives
|Hot Shot’s Secret Stiction Eliminator||High-mileage vehicles||Gas and diesel engines||View on Hot Shot’s Secret|
|Sea Foam SF-16||Natural ingredients||Gas, diesel, 2-stroke, 4-stroke engines||View on Amazon|
|REV X REV0402||Improves horsepower||Gas and diesel engines||View on Amazon|
|Rain-X XL-3 Motocraft||Reduces axle noise||Limited-slip differentials||View on Amazon|
|Lucas Oil 10002||Improves oil life||Gas and diesel engines||View on Amazon|
|Red Line 81403||Quiets valve lifters||For all oil types||View on Amazon|
|BG MOA Part No.110||Reduces knocking||For all oil types||View on Amazon|
Reviews of the Best Oil Additives
Hot Shot’s Secret Stiction Eliminator – Best Overall
Who this is for: If you own a vehicle that’s powered by a gas or diesel engine, Hot Shot’s Secret Stiction Eliminator is for you. It is an excellent additive for high-mileage automobiles, as well. Are you looking to reduce wear and prolong the life of your vehicle? Then you’ll be mighty pleased with what this additive has to offer.
Why we like it: Starting your vehicle in cold weather can be tough on your engine. You’ll often notice difficulty cranking over. And it’s usually accompanied by dark smoke. When using Hot Shot’s Secret Stiction Eliminator, startups are clean, smooth, and smoke-free.
Even in freezing temperatures, this additive makes all the difference in your vehicle’s overall operation. Do you drive a car or truck with high miles? Then this product is right up your alley. It’s completely safe to use, giving you more power where your engine needs it the most.
By cleaning and lubricating every part of the engine that oil comes into contact with, you get stellar results with every startup. And thanks to its residue-cutting action, your vehicle’s oil has less build-up. This means more reliable performance that you can trust.
- Restores compression
- Reduces 62% more wear than other additives
- Removes 50% more stiction than the competition
- Prevents sticky residue and build-up inside HEUI injectors
- Greatly improves your vehicle’s fuel economy
- Improves lubrication while removing stiction
- For gasoline and diesel engines
Sea Foam SF-16 – Most Budget-Friendly
Who this is for: Do you own an older vehicle with high miles? Are you concerned about introducing anything foreign into your engine? Well, you can rest easy, because Sea Foam’s SF-16 is one of the safest formulas you can use.
By using natural ingredients like naphtha and pale oil, your engine will get better lubrication throughout. Everything found in SF-16 is non-abrasive, and therefore won’t harm your motor in any way. It’s the ultimate additive for vehicles that have been around the block.
Deposits and carbon build-up are safely and effectively removed. Your cylinders, manifolds, fuel injection system, and crank box are left clean and pristine. Even equipment like tractors and lawnmowers get improved performance.
Why we like it: Thanks to natural solvents, you’re getting a safe and effective additive for your engine. Even high-mileage vehicles will notice an improvement in power loss. Sea Foam SF-16 works to extend the life of your motor, too.
I’m really impressed by how well this formula works to improve hard starting. And it’s nice to see a natural approach to restoring engine performance. Build-up is radically reduced, too, giving your vehicle more longevity and better reliability.
- Non-abrasive formula
- Less than 25% isopropanol
- Naphtha and pale oil ingredients
- Less than 95% hydrocarbon blend
- Great for high- and low-mileage vehicles
- Works to safely eliminate knocking
- Improves acceleration
REV X REV0402 – Most Versatile Additive
Who this is for: Are you looking for the best protection possible for your vehicle’s engine? Do you want an additive that’s both safe and easy to use? Then Rev-X Stiction Fix Oil Treatment has you covered. No matter what kind of base oil you are using, this formula is safe to use in conjunction with it.
You’re getting an effective blend that does more than just protect. It also improves hard starting, horsepower, overall efficiency, and more. This additive makes a great addition to any vehicle thanks to its safe and versatile properties.
Why we like it: Rev-X’s versatility alone makes it a winner. I was blown away by how well this blend works with other base oils. It isn’t limited in its use, either. You can safely use this additive with any and all lubricants.
Your vehicle will run better, start smoother, and have improved pickup. I like the difference this makes all across the board. It’s rare to find an additive that benefits vehicles this greatly. Does your car or truck tend to run hot?
Rev-X’s Stiction Fix Oil Treatment helps to reduce your vehicle’s running temperature. This allows it to perform at its highest level while remaining cooler. It also makes a big difference in extending the overall life of your ride.
- Environmentally-friendly formula
- Made without harmful acids or additives
- Increases torque, efficiency, and horsepower
- Works to keep temperatures low for better performance
- Just 8 ounces treats 12 quarts of oil
- Safely removes stiction
- Versatile additive
Rain-X XL-3 Motocraft Additive Friction Modifier – Best Ford Differential Additive
Who this is for: This additive is a must-have if you’re a Ford owner. If you’re dealing with unwanted differential noise of any kind, this is the formula you want. It’s very effective in its application, and starts working almost immediately.
You’ll soon notice smoother rotation while driving. And as its name implies, you’ll experience less friction and binding, resulting in much better performance.
Why we like it: It’s an affordable remedy for an expensive issue. The additive helps to eliminate grinding, groaning, shuddering, and binding. After using XL-3 Friction Modifier Additive, you’ll feel the improvements in just a few short miles.
It’s best to unwind on a highway to allow the additive to do its thing. I really appreciate how well this stuff works. And considering its low price point, it’s now my go-to fix when I change my vehicle’s differential fluid.
- 4 fluid ounces
- Automotive formulation
- Made for limited-slip Ford differentials
- Compatible with synthetic and regular gear oil
- Modifies lubricants to reduce friction
- Works quickly to reduce noise
- Affordable and effective
Lucas Oil 10002 – Best Additive for Oil Life
Who this is for: Has your vehicle been consuming more oil than it should? Lucas Oil’s Heavy Duty Oil Stabilizer is the perfect solution. It’s both an inexpensive and effective additive. Have you been noticing low oil pressure as of late?
Then you’ll find this formula to be a huge benefit to your vehicle’s health. I’ve found that it works wonders in helping my vehicle to run more efficiently. Does your ride have difficulty starting? Are you unhappy with your current mileage?
Then you should most certainly give Lucas Oil’s Stabilizer a try. You’ll have smoother startups and less smoking. Your vehicle will get a boost in power, and your gas mileage will noticeably improve. By increasing your oil’s lubrication properties, your engine will run cooler.
Less friction is always a good thing. This will help to prolong your engine’s life, and it’ll use less oil in the process.
Why we like it: Its protective qualities are unlike any other additive on the market. You can use this routinely during oil changes to ensure that your vehicle burns less oil. High-mileage cars and trucks seem to greatly benefit from it.
Even equipment like tractors have better startups. Engines run smoother, and there’s a lot less sputtering as a result of using Lucas Oil’s Stabilizer. But regardless of what you’re using this formula in, you’re sure to get more life out of your oil.
The fact that it reduces heat and lessens wear in all types of engines makes this one a winner. Your oil pressure will be much higher, and that’s a big deal in prolonging the life of your vehicle. Lucas Oil’s Stabilizer also helps to cut your costs on oil, thereby saving you money in the long run.
- Increases oil life
- 100% petroleum-based
- Doesn’t sludge or varnish engine
- Minimizes vehicle’s oil consumption
- Improves dry starts and wear
- Works well with all oil types
- Better oil pressure
Red Line 81403 – Best Additive for Quieting Lifters
Who this is for: Standard motor oils are not permitted to have zinc in them. If you want to get around that, Red Line’s Break-In Oil is a great alternative. By injecting zinc into your oil, surfaces within the rotating assembly experience less scoring.
If you’re the owner of a high-mileage vehicle that has noisy valve lifters, Red Line will help to eliminate that annoying sound. This formula is great for newly rebuilt engines, as well. If you’ve been using other brands that don’t help in telling you how much to add, Red Line makes it easy.
Why we like it: Red Line is a great product to add during every oil change. It offers lots of protection by reducing wear, further prolonging the life of your engine. Specifically, catalytic converters will benefit greatly from Red Line’s protective additives.
If you’re unsure of today’s oils giving your vehicle proper protection, Red Line is the perfect solution to give you the confidence you need. Startups become much smoother thanks to the remarkable nature of Red Line. You’ll notice a lot less smoking, if it’s not eliminated altogether.
Another big bonus I immediately noticed was improved gas mileage. Older engines seem to love this product, and for good reason. You simply can’t get standard oils that have Red Line’s quality additives.
- Anti-wear additives
- Improves piston ring seating
- Works with synthetic or conventional oils
- Reduces or eliminates knocking
- Adds much-needed zinc
- Great for street racers
BG MOA Part # 110 Engine Oil Supplement – Best Additive for Reducing Engine Noise
Who this is for: Are you tired of your engine running hot? Are you a regular stop-and-go driver? If you experience both scenarios often, you’ll be very pleased with what BG MOA brings to the table. By working to reduce running temperatures, your vehicle will drive safer and smoother.
Oxidation is also eliminated thanks to BG MOA’s Oil Supplement. You need an additive that is going to properly fortify your motor oil. And that’s exactly what this formula does. You’re getting prime protection where it matters most, ensuring that you’re getting the best engine life possible.
Why we like it: BG MOA’s Oil Supplement works great in keeping your engine clean. I’m impressed by the quality of this additive. And I like that it cuts out oxidation as well as it does. Another nice benefit is its ability to reduce or eliminate ticking and knocking.
If you think you’re dealing with a clogged oil passage, you most definitely should give BG MOA a try. Their Oil Supplement provides stellar lubrication to keep passages clean. This is what helps to resolve those pesky ticking noises you’re likely hearing as a result.
It’s impressive how quickly it works to do this, too. Within a matter of seconds, the ticking will get quieter. And within minutes it is all but gone. You may still hear a very faint noise. But it’s nowhere near as loud as prior to using BG MOA.
I’m a big fan of additives that extend the life of engine oil. And Oil Supplement works wonders in this department. It gives your vehicle the boost it needs after it’s been sitting for a while, too. And if you’re wanting to improve your ride’s gas mileage, you’ll be pleased to know that this formula does a fine job of doing exactly that.
You can use BG MOA Oil Supplement during every oil change if you like. You’ll get the most out of your engine this way. It’s safe to use and offers exceptional protection.
- Cleans engine
- Reduces oil oxidation
- Keeps oil passages clean
- Works to fortify all types of oil
- Great for reducing ticks and knocks
- Safe to use with synthetic oils
- Fast-acting formula
Oil Additive FAQ
Do Engine oil additives really work?
From what I’ve seen, absolutely. Some may claim to do some pretty wild things, but it often gets down to the brand and their level of trust. Those who have been around a while and pride themselves on having a quality product will often work just as they say.
As you’ll soon find in the following reviews, I could find no fault in any one oil additive. They all performed exceptionally well, with excellent results that I’d be proud to use again.
What is the best oil additive to stop engine knocking?
While several of the brands I tested played a role in reducing knocking, one did so better than any. And that was BG MOA’s Part #110 Engine Oil Supplement. Within seconds of adding this product in, I noticed a difference.
And it was only minutes later that I could barely hear it. Your results may vary depending on the severity of the noise and the vehicle you’re driving. But as it stands, my recommendation wholeheartedly goes to BG MOA.
Does synthetic oil need additives?
This often comes down to personal preference. But by design, synthetic motor oils have less additives. One of the most noticeable is an additive that improves oil viscosity. If you’re looking to reduce wear and prolong the life of your engine, you may seriously want to consider an oil additive.
This is especially true if you use synthetic oil. The products I reviewed are all safe to use. And they do a great job of injecting many much-needed properties.
Can oil additives hurt my engine?
Well, think about it this way: the longer your engine oil is used, the greater chance it has of losing its additives. And the longer your engine runs using that depleted oil, the greater chance it has of getting damaged.
If you want to ensure that your engine is getting the best treatment, you certainly want to use additives. They won’t damage your engine in any way. Quite the opposite, actually. By using additives, you’re extending the life of both your engine and its oil.
What oil additive quiets lifters?
Red Line all the way. Their Engine Break-In Oil Additive worked flawlessly in my testing. I was thoroughly impressed by its ability to reduce or eliminate noisy valve lifters. And there’s nothing quite as nerve-racking as hearing a jammed valve.
This is especially troublesome when you’re driving. Red Line’s Break-In does a fine job getting rid of that annoying tapping sound.
Should I use oil additives?
Whether or not you choose to use additives depends on what you’re dealing with. If you’re trying to troubleshoot something, you may be surprised at how well additives work. There are many benefits of using them. And from my experience, I haven’t noticed any downsides in doing so.
You want to do proper research to ensure you’re getting the right additive for your engine’s needs. But with the right kind, you can help to prolong the life of your engine. And that’s always going to be a good thing.
Which engine oil additive is best?
This is rather subjective, as it often depends on the situation. But as the best overall, Hot Shot’s Secret Stiction Eliminator impressed me the most. It’s a versatile formula that can be used in either gas or diesel engines.
And it’s great for high-mileage cars and trucks. It does a fine job of cleaning your engine, too. It’s perfect if you want to get the most life out of your engine. And it has so many benefits that will improve your vehicle.
Oil is the lifeblood of your vehicle. As you’ve just read, there are a lot of ways in extending that blood. You want to improve your vehicle’s performance the safest ways that you can. And using any of these fine additives has proven to be some of the best.
But not only are they safe, they are highly-effective. I was blown away by how quickly some of them worked to correct my issues. In all the testing that I did, each additive lived up to its name by working correctly and efficiently.
These are the types of products you want to be using in your car, truck, or equipment. Follow up with proper oil changes and care, and you’re sure to get plenty of use out of your vehicle.