We consider a additive for engine oil to be a worthy investment in the long run. In the following post, we will help you to select the best additive for engine oils.

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Our Top Picks:

Best Overall: Buy: Lucas Oil Additive For Engine Oil READ REVIEW

Best For Fuel Economy: Buy: Bestline Superior Lubricants Additive For Engine Oil READ REVIEW

Best For Zddp Additive: Buy: Hyper Lube By Rislone Additive For Engine Oil READ REVIEW

Best For Fuel Tank: Buy: Slick 50 Additive For Engine Oil READ REVIEW

Best For Fuel System Cleaner: Buy: Xado Additive For Engine Oil READ REVIEW

Best With High Octane Race Fuel: Buy: Comp Cams Additive For Engine Oil READ REVIEW

Best For High Mileage Vehicles: Buy: Tribotex Additive For Engine Oil READ REVIEW

Best With Old Engines: Buy: Zddplus Additive For Engine Oil READ REVIEW

Best For Gas Mileage: Buy: Nanovations Additive For Engine Oil READ REVIEW

Best Overall: Lucas Oil Additive For Engine Oil

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The Lucas Oil Additive For Engine Oil should be able to handle its purpose and duties with ease. The lucas oil additive for engine oil has a good motor assembly lube, feels like new and it stopped the leak. Make sure this fits by entering your model number. Moreover, it is great for oil burning and it is used for great products.

Above all, the lucas oil additive for engine oil quiets the engine, does the job and it is perfect for day - use vehicles.

Almost all buyers quickly discovered that the additive can be used in big turbo diesel engines. Check with lucas. Moreover, a few also found that the additive provides extra engine performance. With no doubts, this additive passed the test and had very satisfied buyers eager to share their experience.

• This works well and it changed the oil.
• It is a lot cheaper to buy from Amazon.
• This is great for gas mileage and it is made for piece of mind.
• This works in about any type of engine or gear box.

Best For Fuel Economy: Bestline Superior Lubricants Additive For Engine Oil

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Bestline Superior Lubricants offers a variety of additives for personal choice and yet maintains quality in all the variants. The most superior lubricant additive for engine oil takes more than an oil change every 3, 000 miles to keep cars, trucks, and motorcycles running smoothly. Save fuel and increase the life of your equipment. And, it is great for fresh oil change and it has treats internal components.

Above all, the most superior lubricant additive for engine oil is built for fuel economy and it feels more powerful.

Most customers agree that the additive will not change your viscosity, it is truly the best stuff on the market. And, they strongly agree that the additive cleans and lubricates to a very high level it’s likely to help or eliminate oil consumption. And, they strongly agree that the additive does not restore parts already in need of replacement. Overall, buyers found this to be one of the best additives for daily purposes.

• This is perfect for extreme heat resistance and it is simply awesome.
• Take good care of your vehicle and it will take care of you.
• Use one bottle for every 5 quarts of oil.
• This works well and it extends the car engine.

Best For Zddp Additive: Hyper Lube By Rislone Additive For Engine Oil

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Not everyone likes to purchase additives for their regular usage, but the Hyper Lube By Rislone Additive For Engine Oil would be an anomoly. The hyper lube by rislone additive for engine oil comes with great stuff and it works with part number. The manufacturer says: With over 100 years of experience under our belt, you can trust that our revolutionary performance products will give your car a fighting chance at a long, healthy life. And, it works great, has added one bottle and it is made for piece of mind.

The additive is industrial and it comes with a nice price. In addition, it reduces piston scuffing to add to that reduces friction and wear, especially at start-up, helping to eliminate dry starts. Lastly, the hyper lube by rislone additive for engine oil does what it says and it is best for small engines.

Most customers opine that the additive can be used during oil change, or added in between oil changes. In addition, they also found that the additive is superior to any conventional motor oil and additives that you can buy. In addition, a few say that this additive is needed in flat tappet engines to lube the valve train.tim mechanic for over 40 yrs. Without any doubt, this additive passed the test and had very satisfied buyers eager to share their experience.

• This is designed for an sg api service ratiing.
• We will come up with something for new vehicles soon.
• This additive might not be recommended, even with the turbo.
• This can be used in older or off road vehicals.

Best For Fuel Tank: Slick 50 Additive For Engine Oil

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The Slick 50 Additive For Engine Oil is the most suitable additive on the market today. The slick 50 additive forengine oil is fully compatible with all conventional, semi-synthetic and full synthetic oil types. Make sure this fits by entering your model number. Also, it has added one bottle, changed the oil and it has reduced emissions.

Lastly, the slick 50 additive for engine oil is good for good oil, works great and it has changed oil.

Most customers agree that the additive is ticking and the ac quit working. Further, a few strongly agree that the additive is designed to work with the lubricants in the trans or diff. Moreover, a few strongly agree that the additive is compatible with all multi - grade motor oils and mono - grade oils. To sum up, at the price, they believe that they got a steal of a deal with it.

• This restores performance in engines due to wear and oil consumption in older engines.
• This is good for gas mileage and it runs smoothly.
• This will release the dirt from the inside of the crank case.
• This comes with great stuff for cars and it used for many years.

Best For Fuel System Cleaner: Xado Additive For Engine Oil

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The features department is where Xado Additive For Engine Oil truly manages to shine. The xado additivefor engineoil works in all gasoline-powered, natural-gas and diesel engines of passenger cars and trucks and 4-stroke motorcycles with oil system up to 5 quarts. For the highest level of protection for your vehicle’s engine, use xado atomic oil or atomic metal conditioner highway during each oil change in the future. The product reduces friction, rebuilds worn metal in engine parts and creates protective coating against future wear, thus providing tools - free restoration and anti - wear protection.

Lastly, the xado additive for engine oil is great for fresh oil change, does what it says and it is for power steering conditioner.

Almost all customers agree that the additive can be used for all gasoline engines, including turbo and supercharged. Also, they also found that the additive has gone 4, 000 miles so far without any oil loss, and mpg has increased by 1. To sum up, the tone of buyers is very positive and we believe that the additive suits the purpose.

• This has better acceleration and it has descriptions of products.
• This is burning a quart of oil every 1500 miles.
• This can be used in a ford and toyota engine.
• This is a toyota for gods sake.

Best With High Octane Race Fuel: Comp Cams Additive For Engine Oil

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Comp Cams offer a variety of additives for personal choice and yet maintain quality in all the variants. The compcam additive for engine oil is compatible with gasoline, methanol and high octane race fuel. Make sure this fits by entering your model number. In addition, the additive changes the oil and it is easier.

Lastly, the Comp Cams Additive For Engine Oil is used for great products and it is common.

Most buyers agree that the additive is compatible with any petroleum, synthetic or blended motor oil. Also, they say that the additive is great for breaking in the components of new or rebuilt engines. Further, they also found that this additive should be used in addition to diesel engine oil during the break - in period and after the first oil change. In short, at the price, they believe that they got a steal of a deal with it.

• It is easy to use and it works great.
• This protects all internal engine components, including both flat tappet and roller valve trains.
• Requires no additives or supplements for maximum protection.
• This is great for a rebuilt or new classic engine with flat tappet lifters.

Best For High Mileage Vehicles: Tribotex Additive For Engine Oil

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Next on the list, we've got yet another additive that manages to win our hearts. It's the Tribotex Additive For Engine Oil and it's widely considered as the additive that has the most suitable features. The tribotex additive for engineoil is a more powerful dose for bigger engines. Before treatment, this typical piston ring (see photo), a major component to the correct function of an engine, is scratched and damaged (see arrow) from 120, 000 miles of highway driving. In addition, it is best for less noise and it changes the filter.

The additive is smart and only forms on metal bearing surfaces. Finally, the tribotex additive forengine oil was constructed with over one million dollars of research and development support from the national science foundation and nasa.

Most buyers agree that the additive is recommended to reapply once a year if the engine is a daily driver. And, a few say that the additives are not as apparent as in older engines, so the difference is less perceived. Moreover, a few say that the machine uses the additivefor 40, 000 miles. Overall, most customers found the additive suits best, and no one questions it.

• This is a revolutionary breakthrough in engine coating technology.
• This works in any car no matter the number of miles.
• This definitely shows its age with how it performed.
• This actually helps increase the oil pressure at variable temps and rpm.

Best With Old Engines: Zddplus Additive For Engine Oil

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Zddplus makes beautiful and great additives with classic and smartly chosen materials. The Zddplus Additive For Engine Oil is easy to use and it is great for fast shipping. By adding a small 4 ounce bottle of it at every oil change, an adequate amount of zinc and phosphorus will continue to protect your engine. Also, the additive is the only ep (extreme pressure) component which re-establishes the zddp levels that classic car engines were designed for, while allowing the car owner to use the base oil of their choice.

The additive works well, is compatible with conventional motor oils and it is great for classical cars. Above all, the zddplus additive for engine oil is compatible with all conventional and synthetic oils intended for automotive use.

Almost all buyers opine that the additive does not matter what engine it is used in. Moreover, they strongly agree that the additive will certainly perform better than today’s oil. Further, a few say that the additive is used to buy more expensive valvoline vr1 motor oil in order to get the zinc additive that these older engines need. In short, for almost all buyers, Zddplus product was the most suitable.

• The old engines needed the zinc additive as today ’s oil is detergent free.
• This is great for non roller rocker arms.
• This is made with great stuff and it works great.
• This is what is termed a flat tappet valve train and yeah it needs zddp.

Best For Gas Mileage: Nanovations Additive For Engine Oil

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Compared with other additives in this category, the nanovation additive for engine oil has a convenient design. The nanovation additive for engine oil is easy to use and it is great for gas mileage. The manufacturer says: We are not an oil additive but rather an inert liquid that will not mix with oil or change oil viscosity. And, the additive has miles per gallon and it has reduced engine noise.

The additive is formulated through hundreds of engine cycles in a lab, to greatly reduce internal engine friction and increase fuel efficiency. Also, it cleans away soot & carbon deposits. Lastly, the nanovation additive for engine oil works great and it is easy.

Most customers quickly discovered that the additive restores engines and gears additionally has quieted down the engine at idle considerably. In addition, a few say that the additive cleans away soot & carbon deposits and fuses them into microscopic pores in metal. And, a few strongly agree that the additive is operating is also noticeably smoother and better.

• This reduces soot production by significantly reducing blow-by, increasing engine compression and boosting combustion efficacy.
• The manufacturer says: we attack the cause of soot & carbon damage.
• This has reduced fuel consumption and it reduces wear.