Best Engine Cleanliness Oil Additives

1. Engine Oil Additive & Treatment – Diamond Nano-Lube by BestLine Racing – Reduces Friction Up to 60% – For Gas & Diesel Engines – Motor Oil Additive for More Power, Engine Life & Fuel Economy

Diamond Nano-Lube is a powerful engine oil additive by BestLine Racing. It reduces friction by up to 60%, making engines run smoother. Use it in gas or diesel engines for better performance.

This universal formula works in cars, trucks, and motorcycles. It restores power to older engines and cuts engine noise. One bottle treats 5 quarts of oil, perfect for every oil change.

The nano-particles polish metal surfaces, creating a mirror-like finish. It protects against extreme heat and prevents sludge buildup. Your engine stays cleaner and lasts longer with Diamond Nano-Lube.

2. Liqui Moly Pro-Line Engine Flush | 500 ml | Oil additive | SKU: 2037

Liqui Moly Pro-Line Engine Flush is a 500 ml oil additive designed to clean and flush your engine’s oil system. It works for both gasoline and diesel engines. This product is easy to use and delivers quick results.

The formula is gentle yet effective, ensuring a thorough clean without harming seals or engine materials. It’s also safe for catalytic converters, making it a reliable choice for engine maintenance.

With its simple application, this engine flush is a must-have for keeping your engine in top condition. SKU: 2037.

3. TRIAX Pro Engine Flush Oil-Based Deep Clean Motor Oil Flush Removes Sludge & Carbon | Non-Solvent | Safe for Engine, Seals, Injectors | Professional Shop Grade (16 oz – 473 ml)

TRIAX Pro Engine Flush is a powerful, oil-based cleaner for your engine. It removes harmful sludge and carbon deposits, keeping your engine running smoothly.

This product restores engine power and improves performance. It frees stuck piston rings and enhances valve seating. Your engine will feel rejuvenated and more responsive.

The 100% synthetic formula is safe for all engines. It’s easy to use with every oil change. Simply add, idle, drain, and refill for a noticeable difference.

4. Bardahl 2117 NoSmoke + StopLeak Motor Oil Additive – Treatment for Oil Burning & Excessive Exhaust Smoke – Engine Oil Leak Sealer – Stop Smoke & Quiet Noisy Engines While Restoring Engines – 16 fl oz

Bardahl NoSmoke + StopLeak is a powerful motor oil additive. It stops oil burning and reduces exhaust smoke. This thick formula fills gaps in older engines, keeping them running cleaner and smoother.

It also seals leaks and quiets noisy engines. The additive restores dry seals to prevent further leaks. Your car will run better and sound quieter with this effective solution.

Bardahl has 85+ years of trust. This family-owned company makes top-quality engine products. Use it to maintain and improve your aging vehicle’s performance.

5. Red Line 81403 Engine Oil Break-In Additive – 16 Ounce

Red Line 81403 Engine Oil Break-In Additive is a must-have for your engine. It protects vital parts during the break-in period. One 16-ounce bottle treats up to 12 quarts of oil.

This additive boosts conventional motor oils with antiwear additives. It also includes special detergents for better performance. These features ensure your engine runs smoothly and lasts longer.

Red Line has been a trusted name since 1979. Their products outperform others in the market. Choose Red Line for superior engine protection.

6. Lucas Oil 10020 Upper Cylinder Lube/Fuel Treatment – 5.25 fl oz.

Lucas Oil 10020 is a top fuel additive for gasoline and diesel engines. It works like a tune-up in a bottle.

This 5.25 fl oz treatment cleans and lubricates your fuel system. It boosts MPG, power, and acceleration. It also protects your engine from rust and corrosion.

Safe for all engines, it replaces lead in older models. It meets federal standards and extends the life of your fuel system components.

7. Lucas Oil 10130 Pure Synthetic Oil Stabilizer – 1 Quart

Lucas Oil 10130 is the world’s #1 synthetic oil additive. It keeps your engine light, slick, and long-lasting.

It stabilizes oil pressure in modern engines and protects heavy-duty parts. It also quiets noisy transmissions and reduces heat and wear.

Perfect for new equipment. Withstands extreme conditions. Available in 1 quart and 1 gallon sizes.

8. Motul Engine Clean | Oil Additive & Flush for Gasoline & Diesel Engines | Helps Remove Sludge & Improve Oil Flow | Supports Emission System Care & Engine Protection | 300ml

Motul Engine Clean is a simple, effective solution for deep-cleaning any engine. Just pour it in before an oil change, let it idle for 15 minutes, and watch it remove sludge and deposits. Works with gasoline, diesel, and hybrid engines.

It improves fuel economy and reduces friction by cleaning vital parts like piston rings and turbo lines. Helps lower emissions and supports smoother inspections. Pair it with Motul Fuel System Clean for even better results.

Safe for all engines, including modern and older models. No harsh solvents, eco-friendly, and easy to use. Regular use protects your engine and saves money in the long run.

9. AtomOil Oil Additive for Car Engine and Protection | Nano Technology Motor High Mileage Treatment | Atomic Scale Protective Oil Treatment, 16 Oz. Bottle

AtomOil is a powerful oil additive for your car’s engine. It uses nano technology to protect and improve performance.

This 16 oz. bottle treats 4-5 quarts of oil, extending engine life and saving energy. It stops sludge, protects during cold starts, and works in high temperatures.

10. Lucas Oil 10016 Complete Engine Treatment – 16 Ounce

Lucas Oil 10016 is a complete engine treatment that keeps your engine in top shape. It cleans and lubricates the entire fuel system, from the tank to the injectors.

It removes harmful deposits, lubricates upper cylinder walls, and reduces friction and wear. This treatment also improves engine cleanliness and reduces gum and varnish.

With special Lucas additives, this treatment helps fuel burn thoroughly, resulting in fewer exhaust emissions and more miles per gallon. It’s a simple and effective way to keep your engine running smoothly.