Are you curious about the best power and performance engine additives?
Based on real user experiences, these additives enhance vehicle power, deliver smoother starts, and extend engine life while saving on repairs.
Engine additives can boost power and improve performance in your vehicle. Many users find them easy to use and effective for cleaner engines.
One user shared how Power Performance Fuel Treatment stopped his lawn mower from gumming up. He noticed smoother starts and longer engine life right away.
We picked the best additives based on real tests and reviews. Trust our guide to save money on repairs. Read on to find the perfect one for your needs.
List of Top 10 Power And Performance Engine Additives
| Image | Title | Best For | Price |
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Power Performance 3-in-1 Advanced Fuel Treatment 2oz Bottle |
This powerful fuel treatment is perfect for gasoline engine owners who want to keep fuel fresh and systems clean. It’s ideal for cars, boats, lawnmowers, and other small engines using gas. |
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STA-BIL Small Engine Pro Multi-System Additive – Protects Against Ethanol – Cleans Carb And Injectors – Improves Engine Efficiency – Lubricates Valves And Pistons, 16 fl. oz. (22305) , Red |
Small engine owners who keep lawn mowers, trimmers, and chainsaws running will find this additive a perfect match. It’s ideal for those who want to fight ethanol damage and keep their tools working quietly without extra effort. |
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Bar’s Leaks 1000 High Mileage Engine Repair, 16.9 oz | Restores Performance, Increases Compression & Horsepower, Stops Leaks, Noise & Smoking |
This product is perfect for owners of high-mileage vehicles facing leaks, noise, smoking, or loss of power—keeping your engine running strong without a big repair bill. It’s ideal for cars with worn parts like rings and seals that need a quick, effective boost. |
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Prolube Oil Treatment – Engine Oil Additive for Gas & Diesel Engines – Reduces Wear, Noise, Vibration – Boosts Fuel Economy & Horsepower – Works on Transmissions & Differentials (1QT) |
This Prolube Oil Treatment is perfect for anyone who wants to make their engine last longer. It is great for cars, trucks, and machines of all kinds. |
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Hot Shot’s Secret Original Stiction Eliminator 16 Fluid Ounce Bottle |
Hot Shot’s Secret Original Stiction Eliminator is perfect for truck drivers and car owners who want to fix old diesel engines or keep new ones strong. It cleans up HEUI parts, cuts wear by tons, and works on gas engines too. |
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Slick 50 750002 Recharged High Mileage Engine Treatment, 15-Ounce |
Is your older car starting to show its age? Slick 50 Recharged is perfect for drivers with high-mileage engines. It helps stop leaks and boost power. |
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STP Ceramic Oil Treatment, Protective Coating and Anti-Friction Technology, 15 Oz (19387) |
This STP Ceramic Oil Treatment is perfect for anyone who wants to take better care of their car. It’s great for those who want a smoother, cleaner, and more efficient engine! |
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Rislone 4102 XTREME LUBE® Maximum Performance Engine Treatment, 16.9 oz. |
This engine treatment is perfect for car owners with noisy engines who want to reduce wear and keep things running smooth. It’s ideal for drivers looking to remove sludge and prevent future deposits in older or high-mileage vehicles. |
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Power Performance 3-in-1 Advanced Fuel Treatment 10oz Bottle |
This fuel treatment is perfect for owners of cars, boats, lawn mowers, generators, or any gas engine that sits for long times. It stabilizes fuel for up to 2 years and cleans the entire fuel system to keep it running smooth. |
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Nano Power+ High Performance Lubricant Oil Additive for Car and Marine Engine – Made in Finland – Reduces Fuel Consumption, Emission and Wear – Improves Machine Efficiency and Lifetime |
This Nano Power+ is perfect for anyone who wants a better engine. It helps your engine run smoother and last longer. |
Detailed Reviews
Discover the best engine additives to boost your vehicle’s performance. This guide, crafted with expert analysis and customer insights, highlights the top 10 products. Each additive is reviewed to help you find the perfect fit. Get ready to enhance your engine’s health and enjoy a smoother ride!
1. Power Performance 3-in-1 Advanced Fuel Treatment 2oz Bottle
Power Performance 3-in-1 Advanced Fuel Treatment is a small 2oz bottle that treats up to 10 gallons of gas. It helps keep your engine running smoothly by cleaning your fuel system and preventing gumming. This easy-to-use treatment is perfect for both 4-cycle and 2-cycle gasoline engines.
The antioxidants in this product stabilize fuel for up to 2 years. It prevents corrosion and protects your engine from ethanol damage. Your engine stays cleaner, lasts longer, and performs better.
This treatment is simple to use. Just add it to your gas tank before filling up. It keeps your engine working like new and stops problems before they start.
| Pros | Cons |
|---|---|
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Perfect For:
This powerful fuel treatment is perfect for gasoline engine owners who want to keep fuel fresh and systems clean. It’s ideal for cars, boats, lawnmowers, and other small engines using gas.
Ready to Purchase?
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2. STA-BIL Small Engine Pro Multi-System Additive – Protects Against Ethanol – Cleans Carb And Injectors – Improves Engine Efficiency – Lubricates Valves And Pistons, 16 fl. oz. (22305) , Red
STA-BIL Small Engine Pro is a gasoline and oil additive that cleans out gum and varnish from your fuel system. It helps restore lost power and improve overall performance in small engines.
This formula lubricates valves and pistons for longer life and resistance to wear. It also protects against ethanol damage with special corrosion inhibitors and quiets noisy engines.
Use it in lawn mowers, trimmers, or generators. Add it to gas before fueling. Boost your engine’s power now.
| Pros | Cons |
|---|---|
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Perfect For:
Small engine owners who keep lawn mowers, trimmers, and chainsaws running will find this additive a perfect match. It’s ideal for those who want to fight ethanol damage and keep their tools working quietly without extra effort.
Ready to Purchase?
3. Bar’s Leaks 1000 High Mileage Engine Repair, 16.9 oz | Restores Performance, Increases Compression & Horsepower, Stops Leaks, Noise & Smoking
Bar’s Leaks 1000 High Mileage Engine Repair is easy to use. Just add it to your engine oil. It helps your engine run better and last longer.
This product restores performance by fixing common oil problems. It increases compression and horsepower, making your engine feel smoother. It also stops leaks, noise, and smoking, saving you from expensive repairs.
Use it as a quick fix or a regular addition. It works with most vehicles to keep your engine healthy and strong.
| Pros | Cons |
|---|---|
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Perfect For:
This product is perfect for owners of high-mileage vehicles facing leaks, noise, smoking, or loss of power—keeping your engine running strong without a big repair bill. It’s ideal for cars with worn parts like rings and seals that need a quick, effective boost.
Ready to Purchase?
4. 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 powers up your engine and cuts the noise. It boosts horsepower, smooths vibrations, and makes your ride quieter. This additive works great for gas and diesel engines.
It also saves fuel by cutting friction and stopping overheating. Use it in transmissions and differentials for better protection.
| Pros | Cons |
|---|---|
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Perfect For:
This Prolube Oil Treatment is perfect for anyone who wants to make their engine last longer. It is great for cars, trucks, and machines of all kinds.
Ready to Purchase?
5. Hot Shot’s Secret Original Stiction Eliminator 16 Fluid Ounce Bottle
Hot Shot’s Secret Original Stiction Eliminator brings your engine back to life. It fixes power loss and stops extra wear. This 16-ounce bottle works fast on your ride.
It cleans and oils every part in the oil system. Think HEUI injectors and turbos—they get smooth and strong again.
Tests show it cuts wear by up to 62% more than oil alone. It fixes 9 out of 10 bad injectors. Use it on gas or diesel engines for top results.
| Pros | Cons |
|---|---|
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Perfect For:
Hot Shot’s Secret Original Stiction Eliminator is perfect for truck drivers and car owners who want to fix old diesel engines or keep new ones strong. It cleans up HEUI parts, cuts wear by tons, and works on gas engines too.
Ready to Purchase?
6. Slick 50 750002 Recharged High Mileage Engine Treatment, 15-Ounce
Slick 50 Recharged High Mileage Engine Treatment revives your old engine. It cuts down on wear from heat and oil loss.
It stops oil leaks by fixing seals. Strong cleaners wash away sludge and keep it from coming back. Add it during oil changes to keep your engine smooth.
| Pros | Cons |
|---|---|
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Perfect For:
Is your older car starting to show its age? Slick 50 Recharged is perfect for drivers with high-mileage engines. It helps stop leaks and boost power.
Ready to Purchase?
7. STP Ceramic Oil Treatment, Protective Coating and Anti-Friction Technology, 15 Oz (19387)
Give your engine the ultimate protection with STP Ceramic Oil Treatment. This treatment uses cutting-edge technology to keep your engine running smoothly.
It provides a ceramic coating that lasts up to 15,000 miles. It also helps to reduce friction and clean your engine.
This product is safe for all engines. It can help improve gas mileage. Trust STP for your car care needs.
| Pros | Cons |
|---|---|
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Perfect For:
This STP Ceramic Oil Treatment is perfect for anyone who wants to take better care of their car. It’s great for those who want a smoother, cleaner, and more efficient engine!
Ready to Purchase?
8. Rislone 4102 XTREME LUBE® Maximum Performance Engine Treatment, 16.9 oz.
Keep your engine running smoothly with the Rislone 4102 XTREME LUBE® Maximum Performance Engine Treatment. This powerful formula reduces friction and wear by helping your oil flow better and work across a wider range of temperatures. It’s designed to protect your engine, so it lasts longer and performs better.
This treatment removes and prevents sludge inside your engine. It clears out harmful deposits that can cause noisy valves, stuck rings, and blocked oil passages. Regular use keeps your engine cleaner and ensures everything runs quietly and efficiently. Just add it with your oil and change your filter regularly for best results.
Made in the USA, this product will not void a new vehicle’s warranty. It’s a simple way to give your engine extra protection. Keep your vehicle in top shape with Rislone’s trusted, effective formula.
| Pros | Cons |
|---|---|
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Perfect For:
This engine treatment is perfect for car owners with noisy engines who want to reduce wear and keep things running smooth. It’s ideal for drivers looking to remove sludge and prevent future deposits in older or high-mileage vehicles.
Ready to Purchase?
9. Power Performance 3-in-1 Advanced Fuel Treatment 10oz Bottle
Get ready to improve your engine’s health with the Power Performance 3-in-1 Advanced Fuel Treatment. It comes in a convenient 10oz bottle that can treat up to 50 gallons of gas. Simply use the easy measure markings—just 1 oz per 5 gallons—and you’re set.
This treatment keeps fuel fresh for up to 2 years by adding antioxidants. It also cleans the entire fuel system with advanced detergents and prevents corrosion from Ethanol damage. It works for all 4-cycle and 2-cycle gasoline engines.
Keep your engine running smoothly and reliably. Use it regularly for better performance and protection.
| Pros | Cons |
|---|---|
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Perfect For:
This fuel treatment is perfect for owners of cars, boats, lawn mowers, generators, or any gas engine that sits for long times. It stabilizes fuel for up to 2 years and cleans the entire fuel system to keep it running smooth.
Ready to Purchase?
10. Nano Power+ High Performance Lubricant Oil Additive for Car and Marine Engine – Made in Finland – Reduces Fuel Consumption, Emission and Wear – Improves Machine Efficiency and Lifetime
Nano Power+ is a high-performance oil additive from Finland. It uses copper-based nano-tech to cut friction in engines. This makes cars and boats run better and last longer.
It also lowers fuel use and cuts emissions. This helps save money on gas.
Try Nano Power+ now to boost your engine’s power. Fewer repairs mean more driving fun. It’s trusted worldwide for smarter, greener performance.
| Pros | Cons |
|---|---|
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Perfect For:
This Nano Power+ is perfect for anyone who wants a better engine. It helps your engine run smoother and last longer.
Ready to Purchase?
Buying Guide
Engine additives can boost power and improve performance in your vehicle. Many users find them easy to use and effective for cleaner engines. We picked the best additives based on real tests and reviews.
A user shared how Power Performance Fuel Treatment stopped his lawn mower from gumming up. He noticed smoother starts and longer engine life right away. Another driver added Slick 50 Recharged High Mileage Engine Treatment and saw less oil leaks and quieter running.
When buying engine additives, consider these key factors:
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Engine Type Compatibility: Check if the additive works with your car’s gas or diesel engine. It should match your vehicle’s needs for best results. Look at product labels for clear info.
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Performance Benefits: Pick additives that boost power, cut wear, or clean fuel systems. They help fix common problems like stiction or leaks. Read reviews to see real gains.
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Ease of Use and Dosage: Choose ones that are simple to add during oil changes or to gas tanks. Follow the dose guidelines to avoid mistakes. This keeps your engine safe.
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Protection Against Common Issues: Go for formulas that fight ethanol damage, corrosion, or sludge buildup. They keep engines running smoothly over time. Prevent repairs with strong protectors.
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Fuel Economy and Efficiency: Select additives that cut friction and improve mileage. They reduce fuel use and boost horsepower. Save money on gas with smart choices.
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Durability and Longevity: Look for treatments that last up to 15,000 miles or stabilize fuel for years. They extend engine life with regular use. Trust products with proven tests.
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Brand Reputation and Reviews: Pick brands like STA-BIL or Hot Shot’s Secret with good user feedback. Real tests show their effectiveness. Research to find trusted options.