Best Engine Oil Supplements

Wondering what the best engine oil supplements are for your vehicle? We’ve got you covered with a list of top 10 options to keep your engine running smoothly and efficiently.

Keeping your engine healthy is key to a smooth ride. Engine oil supplements are a simple way to boost performance and protect your vehicle. Whether you’re driving a new car or an old one, these products can make a big difference.

Discover the best options to reduce wear, save fuel, and extend engine life. Let’s explore how these supplements can keep your engine running like new.

List of Top 10 Engine Oil Supplements

Title	Best For	Price
Rislone High Mileage Oil Supplement/Stabilizer, 16.9 oz	This product is perfect for car owners who want to protect their engines and extend their vehicle’s life. It’s ideal for high-mileage cars, trucks, and SUVs, helping to reduce wear and improve performance.	View on Amazon (paid link)
Bg Products MOA & EPR Motor Oil Additive Lubrication Supplement Engine Restore	Bg Products MOA & EPR is perfect for anyone who wants to restore their engine’s power and improve fuel economy. It’s great for drivers with older cars or engines that need a quick, effective clean.	View on Amazon (paid link)
Bar’s Leaks Rislone 4405 Engine Oil Supplement Concentrate with Zinc Treatment – 11 oz, Yellow	This engine oil supplement is perfect for car owners who want to protect their engine and extend its life. It’s ideal for those who drive older vehicles or high-performance cars needing extra protection against wear and tear.	View on Amazon (paid link)
Rislone Hy-Per Lube HPL201-3PK High Performance Oil Supplement – 32 oz, (Pack of 3)	This product is perfect for anyone who wants to keep their engine running smoothly. It’s great for high mileage cars and helps protect your engine between oil changes.	View on Amazon (paid link)
Lucas Oil 10118 High Mileage Oil Stabilizer – 1 Quart	This Lucas Oil 10118 High Mileage Oil Stabilizer is perfect for anyone with an older car. It keeps engines running smoothly and quieter.	View on Amazon (paid link)
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	This engine oil additive is perfect for anyone who wants to boost their vehicle’s performance and extend its life. Whether you drive a car, truck, motorcycle, or race car, this treatment works for gasoline and diesel engines, making it ideal for all types of vehicles.	View on Amazon (paid link)
Prolube Oil Treatment – Engine Oil Additive for Gas & Diesel Engines – Reduces Wear, Noise, Vibration – Boosts Fuel Economy & Horsepower – Works on Transmissions & Differentials (1QT)	Prolube Oil Treatment is perfect for anyone who wants to keep their engine running smoothly and save on fuel costs. Whether you drive a car, truck, SUV, or use industrial machinery, this versatile additive works for gas and diesel engines, transmissions, and differentials.	View on Amazon (paid link)
Bg MOA Part # 110 Engine Oil Supplement	Bg MOA Part # 110 Engine Oil Supplement is perfect for drivers who want to keep their engines running smoothly and save money on oil changes. It’s great for anyone who wants to protect their car and avoid costly repairs.	View on Amazon (paid link)
Rislone High Mileage Oil Supplement/Stabilizer, 16.9 oz, Pack of 5	This product is perfect for car owners who want to protect their engines and extend their vehicle’s life. It’s great for both new and old cars, helping them run smoother and last longer.	View on Amazon (paid link)
Liqui Moly Pro-Line Engine Flush \| 500 ml \| Oil additive \| SKU: 2037	Liqui Moly Pro-Line Engine Flush is perfect for anyone who wants to keep their engine clean and running smoothly. It’s great for gasoline and diesel engines and easy to use.	View on Amazon (paid link)

Detailed Reviews

Discover the top 10 Engine Oil Supplements handpicked for performance and value. Each product is expert-reviewed and backed by customer feedback, ensuring you get the best protection for your engine. Whether you need friction reduction, fuel efficiency, or longevity, this guide has you covered. Dive in to find the perfect match for your vehicle’s needs!

1. Rislone High Mileage Oil Supplement/Stabilizer, 16.9 oz

Rislone High Mileage Oil Supplement/Stabilizer keeps your engine protected and running smoothly. It’s perfect for both new and old engines.

It reduces friction, giving your engine more power and better fuel economy. It also lowers engine temperature, helping it last longer. Plus, it prevents thermal breakdown, so your oil stays strong.

This 100% petroleum-based formula extends oil life by up to 50%. It leaves a protective film on engine parts, reducing wear. Use it to keep your engine healthy between oil changes.

Pros	Cons
Protects engine parts from start-up wear. Cools engine by reducing foam. Extends oil life by up to 50%. Boosts power and saves fuel.	Not for all engines, check compatibility first. May clog filters in older vehicles, use with care. No long-term studies on extended oil life claims.

Perfect For:

This product is perfect for car owners who want to protect their engines and extend their vehicle’s life. It’s ideal for high-mileage cars, trucks, and SUVs, helping to reduce wear and improve performance.

Ready to Purchase?

View Price on Amazon (paid link)

10 Best Full Synthetic 5W-40 Motor Oils for Superior Performance

2. Bg Products MOA & EPR Motor Oil Additive Lubrication Supplement Engine Restore

BG MOA & EPR is a powerful engine restore product. It cleans and protects your engine, improving performance.

This additive softens and dissolves stubborn deposits in as little as 10 minutes. It restores fuel economy and power, while being safe for engine components.

Easy to use, latest production date on can. Effective and reliable engine care.

Pros	Cons
Clears clogged rings in just 10 minutes. Restores fuel economy and engine power. Safe for seals and engine parts. Cleans micro passageways for better performance.	Not a permanent fix, may need repeated use. Results vary, not instant for all engines. Price higher than basic additives.

Perfect For:

Bg Products MOA & EPR is perfect for anyone who wants to restore their engine’s power and improve fuel economy. It’s great for drivers with older cars or engines that need a quick, effective clean.

Ready to Purchase?

View Price on Amazon (paid link)

3. Bar’s Leaks Rislone 4405 Engine Oil Supplement Concentrate with Zinc Treatment – 11 oz, Yellow

Bar’s Leaks Rislone 4405 is a powerful engine oil supplement. It boosts zinc and phosphorus levels in your oil. This helps protect vital engine parts.

The formula reduces friction and wear, especially during start-up. It also prevents piston scuffing and stabilizes motor oil.

Made in the USA, this concentrate keeps bearings and parts lubricated. It extends engine life and improves performance.

Pros	Cons
Boosts engine protection with Zinc and Phosphorous. Reduces friction and wear, extends engine life. Prevents piston scuffing, stabilizes motor oil. Clings to bearings, lubricates where normal oil fails.	Not for synthetic oils, may cause compatibility issues. Small size, requires frequent repurchasing for regular use. Strong odor, might be unpleasant during application.

Perfect For:

This engine oil supplement is perfect for car owners who want to protect their engine and extend its life. It’s ideal for those who drive older vehicles or high-performance cars needing extra protection against wear and tear.

Ready to Purchase?

View Price on Amazon (paid link)

4. Rislone Hy-Per Lube HPL201-3PK High Performance Oil Supplement – 32 oz, (Pack of 3)

Give your engine the ultimate shield with Rislone Hy-Per Lube! This powerful oil supplement is designed to protect your engine from wear, even during short trips or long periods of inactivity. It ensures a protective film stays on all internal parts, ready to go when you are.

It restores performance in high-mileage engines. It also improves fuel economy. Plus, it extends oil life by up to 50%.

Experience a quieter, smoother ride as Hy-Per Lube reduces noise from lifters and the drivetrain. It also lowers gear box and transmission temperatures, giving your engine the best protection and longevity it deserves.

Pros	Cons
Protects engine parts, even after long idle periods. Restores performance and improves fuel economy in high mileage engines. Extends oil life by up to 50%. Reduces noise and cools gear box and transmission temperatures.	High flash point may pose fire risk in extreme heat. Universal fit might not suit specific engine types. Noisy engines may still need additional fixes.

Perfect For:

This product is perfect for anyone who wants to keep their engine running smoothly. It’s great for high mileage cars and helps protect your engine between oil changes.

Ready to Purchase?

View Price on Amazon (paid link)

5. Lucas Oil 10118 High Mileage Oil Stabilizer – 1 Quart

Lucas Oil 10118 High Mileage Oil Stabilizer is a powerful product. It protects your engine by lubricating all internal parts.

This stabilizer reduces noise, cuts emissions, and stops oil loss. It works fast and keeps your engine running smoothly.

Pros	Cons
Protects your engine, reducing wear and extending its life. Quiets noisy engines, eliminating annoying sounds. Cuts emissions, keeping your car eco-friendly. Stops oil leaks, saving you money on repairs.	Not a replacement for regular oil changes, just an add-on. May not work for severely damaged engines, despite claims. Requires precise mixing, too much can harm engine performance.

Perfect For:

This Lucas Oil 10118 High Mileage Oil Stabilizer is perfect for anyone with an older car. It keeps engines running smoothly and quieter.

Ready to Purchase?

View Price on Amazon (paid link)

6. 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

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 that reduces friction by up to 60%. It works for gas and diesel engines in all vehicles. Use it to boost power and extend engine life.

This concentrated formula helps reduce oil changes and engine noise. It’s heat-resistant up to 1,800°F, making it better than traditional additives. Works in cars, trucks, and motorcycles.

Just add one bottle to every 5 quarts of oil. It cleans sludge, prevents deposits, and polishes metal surfaces. Diamond Nano-Lube keeps your engine smooth and efficient.

Pros	Cons
Reduces friction by up to 60% for smoother engine performance. Works in all engines: gas, diesel, hybrid, and racing. Restores power and extends life of high-mileage vehicles. Protects against extreme heat up to 1,800°F.	Pricey compared to regular oil additives. Requires consistent use for best results. Not a quick fix for severe engine damage.

Perfect For:

This engine oil additive is perfect for anyone who wants to boost their vehicle’s performance and extend its life. Whether you drive a car, truck, motorcycle, or race car, this treatment works for gasoline and diesel engines, making it ideal for all types of vehicles.

Ready to Purchase?

View Price on Amazon (paid link)

7. Prolube Oil Treatment – Engine Oil Additive for Gas & Diesel Engines – Reduces Wear, Noise, Vibration – Boosts Fuel Economy & Horsepower – Works on Transmissions & Differentials (1QT)

Prolube Oil Treatment - Engine Oil Additive for Gas & Diesel Engines - Reduces Wear, Noise, Vibration - Boosts Fuel Economy & Horsepower - Works on Transmissions & Differentials (1QT)

Prolube Oil Treatment boosts your engine’s power and cuts noise. It works for gas and diesel engines, transmissions, and differentials.

It saves fuel, extends engine life, and is easy to use. Reduce wear, improve efficiency, and protect your engine with Prolube.

Pros	Cons
Boosts engine power, cuts noise, and smooths vibrations. Saves fuel, cuts costs, and improves efficiency. Protects and extends engine life by reducing wear. Works with gas, diesel, and transmissions—easy to use.	Not for engines with specific oil additive restrictions. May void warranties if used incorrectly. Requires precise mixing for best results.

Perfect For:

Prolube Oil Treatment is perfect for anyone who wants to keep their engine running smoothly and save on fuel costs. Whether you drive a car, truck, SUV, or use industrial machinery, this versatile additive works for gas and diesel engines, transmissions, and differentials.

Ready to Purchase?

View Price on Amazon (paid link)

8. Bg MOA Part # 110 Engine Oil Supplement

Bg MOA Part # 110 is an engine oil supplement that keeps your engine running smoothly. It helps you extend oil change intervals safely.

This product protects critical engine parts, ensuring they work reliably. It also prevents oil from being used up too quickly. Your engine stays in better shape for longer.

With BG MOA 110, you save time and money on maintenance. It’s easy to use and works with most engines. Trust it to keep your vehicle running strong.

Pros	Cons
Extend oil changes safely with this powerful supplement. Protect your engine’s critical parts for reliable performance. Reduce oil consumption and save money on top-ups. Trust the BG MOA 110 model for proven engine care.	Not a full oil replacement, just a supplement. May not work with all engine types. Costly compared to regular oil additives.

Perfect For:

Bg MOA Part # 110 Engine Oil Supplement is perfect for drivers who want to keep their engines running smoothly and save money on oil changes. It’s great for anyone who wants to protect their car and avoid costly repairs.

Ready to Purchase?

View Price on Amazon (paid link)

9. Rislone High Mileage Oil Supplement/Stabilizer, 16.9 oz, Pack of 5

Give your engine the ultimate protection with Rislone High Mileage Oil Supplement. This powerful formula creates a protective film on all internal parts, guarding against wear from the very first second of startup.

Rislone also helps lower engine temperature by reducing foam, preventing thermal breakdown, and extending oil life by up to 50%. Experience smoother operation and increased power thanks to its advanced friction modifiers.

Quieter engine. More power. Longer life.

Pros	Cons
Protects engines from start-up wear with a strong film. Cools engines by reducing foam and heat. Extends oil life by up to 50%. Reduces noise in older engines.	Not for synthetic oils: May not work well with synthetic lubricants. Petroleum-based: Not eco-friendly, may attract dirt over time. Bulk pack: Might be too much for small engines.

Perfect For:

This product is perfect for car owners who want to protect their engines and extend their vehicle’s life. It’s great for both new and old cars, helping them run smoother and last longer.

Ready to Purchase?

View Price on Amazon (paid link)

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

Revitalize your engine with Liqui Moly Pro-Line Engine Flush. It’s the easy way to clean your oil system. Get gentle and rapid cleaning for both gasoline and diesel engines.

This powerful formula is safe for your engine’s seals. It also works wonders with catalytic converters.

Using it is super simple. Just follow the instructions and experience a cleaner, healthier engine.

Pros	Cons
Cleans your engine quickly and safely. Gentle on seals and engine materials. Works with catalytic converters, no harm. Easy to use, no hassle.	Not for long-term engine care, just a quick fix. Requires extra oil change, adding time and cost. May not remove deep-seated engine gunk.

Perfect For:

Liqui Moly Pro-Line Engine Flush is perfect for anyone who wants to keep their engine clean and running smoothly. It’s great for gasoline and diesel engines and easy to use.

Ready to Purchase?

View Price on Amazon (paid link)

Buying Guide

Keeping your engine healthy is key to a smooth ride. Engine oil supplements can boost performance and protect your vehicle.

Choosing the right product can make a big difference. Here’s what to consider:

Engine Type: Check if the supplement works for gas or diesel engines. Some are made for both.
Mileage: High-mileage engines need special formulas to reduce wear and restore power.
Protection Level: Look for products that reduce friction, lower temperatures, and prevent deposits.
Ease of Use: Choose supplements that are easy to add and work quickly.
Longevity: Pick options that extend oil life and save on maintenance.
Noise Reduction: Some products quiet engines and reduce vibrations for a smoother ride.
Eco-Friendly: Consider formulas that are safe for catalytic converters and reduce emissions.
Brand Reputation: Trust reliable brands with proven results and positive reviews.

With the right supplement, your engine will run smoother, last longer, and perform better.