What are the best fuel additives for your engine?
Join real users who share how these additives clean fuel systems, stabilize fuel, and boost engine performance for smoother rides.
Keeping your engine running smoothly is important. Fuel additives can help with this. Many people are already seeing the benefits of using these products.
These additives can clean your fuel system. They also help to stabilize fuel. Many users report improved engine performance.
You can find the perfect fuel additive for your needs. We’ll explore the best options available. Get ready to discover how to keep your engine in top shape!
List of Top 10 Fuel Additives
| Image | Title | Best For | Price |
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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. |
This fuel stabilizer is perfect for owners of boats, cars, motorcycles, lawn mowers, and any small engines who store their vehicles or equipment for long periods, like months at a time without use. It keeps fuel fresh and ready, stops rust and buildup, and works great in both gas and ethanol mixes to save you time and money. |
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STA-BIL Fuel Stabilizer – 16oz |
This STA-BIL Fuel Stabilizer is perfect for anyone who wants to keep their engines running smoothly. It’s great for boats, cars, and small engines that sit for a while. |
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Star Tron Enzyme Fuel Treatment – Regular Gas Formula 8 oz – Treats 48 Gallons (014308FF) |
Star Tron Enzyme Fuel Treatment is perfect for boat owners who need to store their engines for long periods without worries about starting issues or fuel problems. It’s also ideal for car drivers, RV travelers, and even lawn mower users wanting to fix ethanol troubles, boost fuel mileage, cut down on bad smells from the engine, and protect any gas-powered machine. |
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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. |
This product is perfect for boat owners, RV enthusiasts, and lawn care pros who store gear in winter. It keeps their fuel fresh so engines start easy after months. |
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Chevron 67740-CASE Techron Concentrate Plus Fuel System Cleaner – 12 oz. (Pack of 6) |
This product is perfect for owners of cars, trucks, motorcycles, boats, and other gasoline engines. It helps you keep your vehicle running smooth and strong with simple, regular use. |
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Chevron Techron Concentrate Plus Fuel System Cleaner, 20 oz., Pack of 1 |
This fuel system cleaner is perfect for anyone who wants a smooth-running engine. It is great for those who want to improve their car’s performance and fuel stability! |
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Lucas Oil 10013 Fuel Treatment – 1 Gallon |
Is your car feeling sluggish? Lucas Oil Fuel Treatment is perfect for anyone wanting to boost their engine’s performance and fuel efficiency. It’s your one-stop solution for a smoother ride and a healthier engine! |
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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 is perfect for boat owners and anyone with gas engines in cars, trucks, or lawn equipment who want to fix ethanol problems, revive old fuel, boost mileage, prevent water issues, cut emissions, and keep engines running smoothly without hassle. |
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Ethanol Shield Fuel Stabilizer, 24 oz (2 Pack) Keeps Fuel Fresh, Gasoline Treatment Fuel Additive That Protects Fuel System, Gas Stabilizer for Fuel Storage, Antioxidant and Anticorrosive |
Ethanol Shield Fuel Stabilizer is perfect for boat owners, RV drivers, and DIY mechanics who store gasoline for months. It protects fuel from going bad, keeping engines ready without extra hassle. |
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Liqui Moly 2007 Jectron Gasoline Fuel Injection Cleaner – 300 ml , blue , 10.14 Fl Oz (Pack of 1 ) |
Is your car not running as well as it should? The Liqui Moly Jectron Gasoline Fuel Injection Cleaner is perfect for you! It helps your car run smoother and cleaner. |
Detailed Reviews
Our expert analysis and real customer feedback picked these top fuel additives for your engine. Each one is thoroughly reviewed to show its key features, strong performance, and great value. We know how to guide you to the perfect match for smooth rides and long engine life. Keep reading to find the best fuel additives that fit your needs and save money.
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.

Keep your fuel fresh with STA-BIL Storage Fuel Stabilizer. It protects your engine from corrosion. This product works for both 2-cycle and 4-cycle engines.
STA-BIL keeps fuel good for up to 24 months. It also prevents gum and varnish build-up.
| Pros | Cons |
|---|---|
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Perfect For:
This fuel stabilizer is perfect for owners of boats, cars, motorcycles, lawn mowers, and any small engines who store their vehicles or equipment for long periods, like months at a time without use. It keeps fuel fresh and ready, stops rust and buildup, and works great in both gas and ethanol mixes to save you time and money.
Ready to Purchase?
2. STA-BIL Fuel Stabilizer – 16oz

Is your engine feeling sluggish? STA-BIL Fuel Stabilizer is the answer!
This product is easy to use. It is a great product, really. Keep your engine happy.
Don’t let fuel problems sideline you. This stuff really does the trick.
| Pros | Cons |
|---|---|
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Perfect For:
This STA-BIL Fuel Stabilizer is perfect for anyone who wants to keep their engines running smoothly. It’s great for boats, cars, and small engines that sit for a while.
Ready to Purchase?
3. Star Tron Enzyme Fuel Treatment – Regular Gas Formula 8 oz – Treats 48 Gallons (014308FF)

Star Tron Enzyme Fuel Treatment makes engines start easy and run smooth. It has advanced enzymes that work even after long rest. Use it for any engine you own.
It stops and fixes ethanol problems. This gives better fuel use and saves money.
It cleans gum and carbon from fuel parts. Works in cars, boats, RVs, and mowers. Cuts smoke and harmful fumes too.
| Pros | Cons |
|---|---|
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Perfect For:
Star Tron Enzyme Fuel Treatment is perfect for boat owners who need to store their engines for long periods without worries about starting issues or fuel problems. It’s also ideal for car drivers, RV travelers, and even lawn mower users wanting to fix ethanol troubles, boost fuel mileage, cut down on bad smells from the engine, and protect any gas-powered machine.
Ready to Purchase?
4. 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.

Want to keep your engine running like new? STA-BIL Storage helps your gas stay fresh. It fights corrosion and makes for easy starts, every time.
Just pour it in your tank and go! STA-BIL is the top-rated way to protect your engine.
| Pros | Cons |
|---|---|
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Perfect For:
This product is perfect for boat owners, RV enthusiasts, and lawn care pros who store gear in winter. It keeps their fuel fresh so engines start easy after months.
Ready to Purchase?
5. Chevron 67740-CASE Techron Concentrate Plus Fuel System Cleaner – 12 oz. (Pack of 6)

Techron Concentrate Plus keeps your engine running smooth. This fuel system cleaner works on cars and trucks. It fixes common engine problems fast.
It cleans fuel injectors and restores power. You get better gas mileage and quick starts.
Use it every 3,000 miles for best results. Protect all your gas-powered gear like boats and bikes. Buy the pack of six and save time.
| Pros | Cons |
|---|---|
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Perfect For:
This product is perfect for owners of cars, trucks, motorcycles, boats, and other gasoline engines. It helps you keep your vehicle running smooth and strong with simple, regular use.
Ready to Purchase?
6. Chevron Techron Concentrate Plus Fuel System Cleaner, 20 oz., Pack of 1

Chevron Techron Concentrate Plus keeps your engine running smooth. It reduces rough idle, engine surge, and hesitation. It also cleans spark plugs to stop fouling.
This 20 oz. bottle is quality assured by Chevron. It improves cold start performance.
Use it to boost fuel stability for up to one year. Your car will start easier and run better. Get Chevron Techron today for a healthier engine.
| Pros | Cons |
|---|---|
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Perfect For:
This fuel system cleaner is perfect for anyone who wants a smooth-running engine. It is great for those who want to improve their car’s performance and fuel stability!
Ready to Purchase?
7. Lucas Oil 10013 Fuel Treatment – 1 Gallon

Lucas Oil 10013 is the world’s top fuel additive for gas and diesel engines. It works as a tune-up in a bottle. It boosts miles per gallon too.
This treatment cleans and lubricates your fuel system parts. It helps burn off extra exhaust fumes for better fuel economy.
It increases power and speed by improving fuel flow. It also fights rust and extends engine life.
| Pros | Cons |
|---|---|
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Perfect For:
Is your car feeling sluggish? Lucas Oil Fuel Treatment is perfect for anyone wanting to boost their engine’s performance and fuel efficiency. It’s your one-stop solution for a smoother ride and a healthier engine!
Ready to Purchase?
8. 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 is a concentrated formula that works in all engines and all fuels. It solves ethanol problems like poor performance and low fuel economy. This makes it the ideal choice for any vehicle or gas tool.
It stabilizes fuel for up to two years and revives old fuel after months of sitting. You can use it to keep engines running smoothly without worry.
It prevents gum, carbon, and varnish to boost fuel economy. It also stops water build-up and cuts down smoke and emissions. Plus, it mixes easily with other additives—no need for measuring.
| Pros | Cons |
|---|---|
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Perfect For:
Star Tron Enzyme Fuel Treatment is perfect for boat owners and anyone with gas engines in cars, trucks, or lawn equipment who want to fix ethanol problems, revive old fuel, boost mileage, prevent water issues, cut emissions, and keep engines running smoothly without hassle.
Ready to Purchase?
9. Ethanol Shield Fuel Stabilizer, 24 oz (2 Pack) Keeps Fuel Fresh, Gasoline Treatment Fuel Additive That Protects Fuel System, Gas Stabilizer for Fuel Storage, Antioxidant and Anticorrosive

Keep your fuel fresh with Ethanol Shield Fuel Stabilizer, a top additive that stops gas from going bad. It has strong antioxidants and anticorrosives to guard your engine parts.
This stabilizer fights phase separation in ethanol blends and adds a top-level detergent to clean your system. It even bonds 2-cycle oil to fuel, slows aging, and protects rubber parts.
Buy now to shield your engine today. Save money on repairs. Keep driving smooth.
| Pros | Cons |
|---|---|
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Perfect For:
Ethanol Shield Fuel Stabilizer is perfect for boat owners, RV drivers, and DIY mechanics who store gasoline for months. It protects fuel from going bad, keeping engines ready without extra hassle.
Ready to Purchase?
10. Liqui Moly 2007 Jectron Gasoline Fuel Injection Cleaner – 300 ml , blue , 10.14 Fl Oz (Pack of 1 )

Liqui Moly 2007 Jectron Gasoline Fuel Injection Cleaner blasts away dirt from your car’s fuel system. It fixes starting issues, hesitation, and stalling. Your engine runs better fast.
It gives smoother idling and sharper throttle response. Cleaner combustion boosts your car’s power.
Grab this 300 ml bottle today. Keep your car clean and efficient. Drive with confidence.
| Pros | Cons |
|---|---|
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Perfect For:
Is your car not running as well as it should? The Liqui Moly Jectron Gasoline Fuel Injection Cleaner is perfect for you! It helps your car run smoother and cleaner.
Ready to Purchase?
Buying Guide
Fuel additives boost engine health and fight fuel issues. They clean systems and stabilize gas for better runs. Pick the right one for smoother drives.
Real users love how STA-BIL keeps gas fresh for months without starting problems. One boat owner says Star Tron revives old fuel and cuts smoke in marine engines. A truck driver notes Techron cleans injectors and boosts mileage right away.
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Engine Type: Match additive to gas or diesel engines. Many work on both but check labels. Two-cycle engines need special blends.
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Vehicle Use: Consider cars, boats, or lawnmowers. Marine formulas fight corrosion from water. Off-road types handle rough rides.
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Fuel Issues Addressed: Look for cleaners that fix gum, varnish, or ethanol problems. Stabilizers prevent rust and aging. Test for ethanol blend needs.
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Bottle Size: Choose based on tank size and use frequency. Small 8 oz bottles suit occasional jobs. Large gallons fit big fleets.
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Brand Reputation: Pick trusted brands like STA-BIL or Chevron. Read reviews for proven results. Avoid unknowns for safety.
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Cost and Value: Compare prices per ounce for savings. Affordable options still deliver power. Bulk packs cut long-term costs.
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Ease of Use: Go for pour-in formulas without tools. Some mix easily with fuel. Check simple instructions.
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Storage Claims: Want long-term protection? Seek stabilizers good for 24 months. Confirm for your climate.
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Environmental Impact: Opt for low-emission cuts. Eco-friendly types reduce fumes. Support green driving.