What are the best fuel additives?
Discover the top fuel additives that real users love, like STA-BIL for keeping fuel fresh for years and Chevron Techron for quickly fixing rough idles.
Fuel additives can make your engine run better. They clean dirt and stop rust. Many people say their cars feel smoother after using them.
Real users love how STA-BIL keeps their fuel fresh for years. One driver shared that Chevron Techron fixed their rough idle fast. This guide picks the top ones with care.
List of Top 10 Fuel Additives
| Image | Title | Best For | Price |
|---|---|---|---|
 |
STA-BIL Storage Fuel Stabilizer | Keeps Fuel Fresh for 24 Months, Prevents Corrosion, Gasoline Treatment Fuel Additive that Protects Fuel System, Gas Stabilizer for Fuel Storage, 32 oz. |
STA-BIL Storage Fuel Stabilizer is perfect for boaters, motorcycle riders, and homeowners who store fuel in engines for long times. It keeps fuel fresh and protects against corrosion from ethanol in gas. |
|
 |
Chevron 67740-CASE Techron Concentrate Plus Fuel System Cleaner – 12 oz. (Pack of 6) |
This fuel system cleaner is perfect for car and truck drivers who want to fix rough idling, boost lost power, and keep their engines clean. It’s also ideal for owners of motorcycles, boats, ATVs, and other gas-powered vehicles that need better fuel performance. |
|
 |
STA-BIL Storage Fuel Stabilizer | Keeps Fuel Fresh for 24 Months, Prevents Corrosion, Gasoline Treatment Additive that Protects System, Gas Stabilizer for Storage, 8 oz. |
STA-BIL Storage is perfect for boat owners, RV drivers, and folks with outdoor tools who keep them parked for months. It’s a top choice for anyone wanting to save fuel and ensure quick starts after storage. |
|
 |
Archoil AR6500 Diesel Treatment (40 oz) Two Pack – Treats 800 Gallons – Additive for All Diesel Vehicles |
Do you own a diesel vehicle? Want better performance and a cleaner fuel system? Archoil AR6500 Diesel Treatment is perfect. It’s made for all diesel vehicles, so you can enjoy the benefits. |
|
 |
STAR BRITE Star Tron Enzyme Fuel Treatment – Concentrated Formula 32 Fl. Oz. – Treats up to 512 Gallons – Fuel Stabilizer & Treatment, Gasoline Stabilizer, Star Tron Marine Enzyme Fuel Treatment |
This Star Tron Enzyme Fuel Treatment is perfect for boat owners and car drivers who face ethanol fuel problems. It helps lawn mower users and tool owners keep fuel fresh and engines running smooth. |
|
 |
Star Tron Enzyme Fuel Treatment – Regular Gas Formula 8 oz – Treats 48 Gallons (014308FF) |
Star Tron Enzyme Fuel Treatment is perfect for people who drive cars, boats, RVs, or use lawn mowers with gas engines. It’s great for anyone who wants to stop ethanol issues, boost fuel economy, and cut emissions. |
|
 |
Chevron Techron High Mileage Fuel System Cleaner, 12 oz, Pack of 1 |
Chevron Techron High Mileage Fuel System Cleaner is perfect for drivers of older vehicles who want to restore lost power and keep their engines clean and powerful. |
|
 |
Royal Purple 18000 Max Atomizer Fuel Injector Cleaner, 6 fl. oz. |
This cleaner is perfect for drivers with gasoline or diesel engines. It restores fuel economy, stabilizes ethanol, maximizes horsepower, and improves responsiveness. |
|
 |
Lucas Oil LUC10020 Fuel Treatment – 5.25 Oz, multi-colored |
Want better engine performance and increased MPG? The Lucas Oil Fuel Treatment is perfect for anyone who wants to clean, lubricate, and protect their vehicle’s fuel system, whether it’s gasoline or diesel. It’s like a tune-up in a bottle, giving you more power and a longer engine life! |
|
 |
Royal Purple Max-Clean Fuel System Cleaner and Stabilizer 11722 20 Ounce |
This product is perfect for car owners with new engines who want to keep them clean. It boosts fuel economy and horsepower while cutting emissions. |
Detailed Reviews
Discover the top 10 fuel additives picked by real experts and happy users for the best results. We review each one fully for strong features, top performance, and great value to meet your needs. Let our guide lead you to the perfect choice that keeps your engine running smooth and saves you money—dive in to learn more now.
1. STA-BIL Storage Fuel Stabilizer | Keeps Fuel Fresh for 24 Months, Prevents Corrosion, Gasoline Treatment Fuel Additive that Protects Fuel System, Gas Stabilizer for Fuel Storage, 32 oz.
Don’t let old fuel ruin your engine. STA-BIL Storage keeps your fuel fresh for up to 24 months.
This gas stabilizer prevents varnish and gum deposits. It also adds corrosion protection.
It works in all engines! So, protect your system! Use STA-BIL Storage.
| Pros | Cons |
|---|---|
|
|
Perfect For:
STA-BIL Storage Fuel Stabilizer is perfect for boaters, motorcycle riders, and homeowners who store fuel in engines for long times. It keeps fuel fresh and protects against corrosion from ethanol in gas.
Ready to Purchase?
- 10 Best Freeze Protection Fluids: Winter-Ready Now
- 10 Best Seasonal Water System Protectors: Secure Your System
- 10 Best Winterizing Antifreezes for Ultimate Cold Protection
- 10 Best UV Protection Face Masks: Shield Your Skin Today
- 10 Best Snowboarding Face Covers for Ultimate Warmth
- 10 Best All Weather Face Masks: Stay Dry & Comfy
- 10 Best Leather Biker Gloves for Peak Comfort & Control
- 10 Best Shockproof Bike Mounts for Steady Bumpy Rides
2. Chevron 67740-CASE Techron Concentrate Plus Fuel System Cleaner – 12 oz. (Pack of 6)
This fuel system cleaner from Chevron boosts your engine’s power. It works in cars, trucks, and many other vehicles.
It cleans the fuel injectors and valves. It restores lost power and fuel economy. It reduces rough idle and hesitation.
Use it every 3,000 miles for best results. It keeps fuel stable for up to one year.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This fuel system cleaner is perfect for car and truck drivers who want to fix rough idling, boost lost power, and keep their engines clean. It’s also ideal for owners of motorcycles, boats, ATVs, and other gas-powered vehicles that need better fuel performance.
Ready to Purchase?
3. STA-BIL Storage Fuel Stabilizer | Keeps Fuel Fresh for 24 Months, Prevents Corrosion, Gasoline Treatment Additive that Protects System, Gas Stabilizer for Storage, 8 oz.
STA-BIL keeps fuel fresh for 24 months. It stops corrosion in your engine. It makes starts easy and quick.
Pour in the additive before fuel. Run the engine for 5 minutes after.
| Pros | Cons |
|---|---|
|
|
Perfect For:
STA-BIL Storage is perfect for boat owners, RV drivers, and folks with outdoor tools who keep them parked for months. It’s a top choice for anyone wanting to save fuel and ensure quick starts after storage.
Ready to Purchase?
4. Archoil AR6500 Diesel Treatment (40 oz) Two Pack – Treats 800 Gallons – Additive for All Diesel Vehicles
AR6500 Diesel Treatment helps engines run cleaner. It comes as a two-pack and treats up to 800 gallons.
It is designed for modern diesel fuels. It uses Archoil’s combustion modifier tech and a strong cetane boost to increase power and response.
It cleans the fuel system. It lubricates pumps and rails. It protects HPCR systems.
| Pros | Cons |
|---|---|
|
|
Perfect For:
Do you own a diesel vehicle? Want better performance and a cleaner fuel system? Archoil AR6500 Diesel Treatment is perfect. It’s made for all diesel vehicles, so you can enjoy the benefits.
Ready to Purchase?
5. STAR BRITE Star Tron Enzyme Fuel Treatment – Concentrated Formula 32 Fl. Oz. – Treats up to 512 Gallons – Fuel Stabilizer & Treatment, Gasoline Stabilizer, Star Tron Marine Enzyme Fuel Treatment
Star Tron Enzyme Fuel Treatment works in all engines and all fuels, making it the perfect solution for any vehicle or tool that runs on gas. It prevents and cures most problems from ethanol, like poor performance and lower fuel economy.
This treatment stabilizes fuel for up to 2 years and helps bring back old fuel after long storage. It clears gum, carbon, and varnish to boost fuel efficiency and stops water from building up in fuel.
Star Tron cuts smoke and emissions by improving how fuel burns. It’s easy to mix with other additives without measuring. Try it now for a smoother ride.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This Star Tron Enzyme Fuel Treatment is perfect for boat owners and car drivers who face ethanol fuel problems. It helps lawn mower users and tool owners keep fuel fresh and engines running smooth.
Ready to Purchase?
6. Star Tron Enzyme Fuel Treatment – Regular Gas Formula 8 oz – Treats 48 Gallons (014308FF)
Star Tron Enzyme Fuel Treatment is a top pick for your gas engine. This 8 oz bottle treats up to 48 gallons of regular gas.
Star Tron uses smart enzymes to make engines start fast. It fixes ethanol woes like rough runs and bad mileage. Your ride will feel smooth again.
It cleans gum and dirt from fuel lines. This boosts your gas savings. Star Tron fits cars, boats, and mowers too. It cuts smoke and helps the air.
| Pros | Cons |
|---|---|
|
|
Perfect For:
Star Tron Enzyme Fuel Treatment is perfect for people who drive cars, boats, RVs, or use lawn mowers with gas engines. It’s great for anyone who wants to stop ethanol issues, boost fuel economy, and cut emissions.
Ready to Purchase?
7. Chevron Techron High Mileage Fuel System Cleaner, 12 oz, Pack of 1
Restore power and performance with every tank. It clears gum, varnish, and deposits.
Maximize fuel economy. Protects metal parts from corrosion. It is compatible with ethanol blends.
| Pros | Cons |
|---|---|
|
|
Perfect For:
Chevron Techron High Mileage Fuel System Cleaner is perfect for drivers of older vehicles who want to restore lost power and keep their engines clean and powerful.
Ready to Purchase?
8. Royal Purple 18000 Max Atomizer Fuel Injector Cleaner, 6 fl. oz.
Discover the Royal Purple 18000 Max Atomizer Fuel Injector Cleaner, a quick way to clean your engine’s fuel system. Add just 6 ounces to your gasoline or diesel engine for fast results.
Restore fuel economy and see more miles per gallon. Maximize horsepower for stronger performance. Stabilize ethanol to keep your engine steady and efficient.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This cleaner is perfect for drivers with gasoline or diesel engines. It restores fuel economy, stabilizes ethanol, maximizes horsepower, and improves responsiveness.
Ready to Purchase?
9. Lucas Oil LUC10020 Fuel Treatment – 5.25 Oz, multi-colored
Boost your engine’s power and efficiency with Lucas Oil Fuel Treatment. This top additive cleans and lubricates the fuel system for better performance.
It improves fuel economy by burning excess emissions. This treatment works great in both gasoline and diesel engines. You get more acceleration and less deposit buildup.
Lucas Fuel Treatment prevents rust and corrosion on engine parts. It meets federal standards for low sulfur in diesel fuel.
| Pros | Cons |
|---|---|
|
|
Perfect For:
Want better engine performance and increased MPG? The Lucas Oil Fuel Treatment is perfect for anyone who wants to clean, lubricate, and protect their vehicle’s fuel system, whether it’s gasoline or diesel. It’s like a tune-up in a bottle, giving you more power and a longer engine life!
Ready to Purchase?
10. Royal Purple Max-Clean Fuel System Cleaner and Stabilizer 11722 20 Ounce
Keep your engine running smooth with this 3-in-1 fuel additive. It cleans new engines deeply and boosts your vehicle’s overall performance. Say goodbye to dirty fuel systems and drive with confidence.
Fuel economy jumps up by an average of 3.2 percent. You’ll see more horsepower too, increasing by an average of 2.6 percent.
Cut down on harmful emissions like hydrocarbons, NOx, and CO. On average, reduce them by 12, 13, and 18 percent respectively. Start treating your ride right and feel the powerful difference.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This product is perfect for car owners with new engines who want to keep them clean. It boosts fuel economy and horsepower while cutting emissions.
Ready to Purchase?
Buying Guide
Want a better running engine? Fuel additives can help.
Many people say their cars run smoother. Real users love how STA-BIL keeps fuel fresh. Chevron Techron fixed rough idling fast.
Here is what to think about when you buy:
- Engine type: What kind of engine do you have? Some additives are for gasoline and some are for diesel. Pick the right one.
- Problem: What is your goal? Do you want to clean injectors? Or stabilize fuel? Find an additive for your needs.
- Size: How much do you need? Some come in small bottles for one use. Others treat many gallons.
- Features: Does it prevent corrosion? Does it boost cetane? Look for features that matter to you.
- Reviews: What do others say? Read user reviews to see how well it works. This can give you real world experience feedback.
- Cost: How much does it cost? Compare the price per use. Balance cost with features and benefits.