Are you looking for the best fuel stabilizers for long-term storage? This guide offers insights from many users to help you choose the perfect fuel stabilizer for your engine.
Keeping your engine in top shape during long-term storage can be a challenge. Fuel stabilizers are a simple solution to protect your equipment. They keep fuel fresh and prevent costly repairs.
Many users have shared their experiences with fuel stabilizers. They report easier starts and smoother engine performance after storage. This guide will help you choose the best product for your needs.
This guide will help you find the perfect fuel stabilizer. It covers the best options on the market. Get ready to protect your engine!
List of Top 10 Storage Fuel Stabilizers for Long-Term Storage
| 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 product is perfect for homeowners and people with small engines who store fuel for later use. It keeps fuel fresh for up to 24 months, prevents corrosion, and treats up to 80 gallons of fuel for 2‑cycle and 4‑cycle engines. |
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STA-BIL Storage Fuel Stabilizer – Keeps Fuel Fresh for 24 Months – Prevents Corrosion – Gasoline Treatment that Protects Fuel System – Fuel Saver – Treats 25 Gallons – 10 Fl. Oz. (22206) |
Want to keep your fuel fresh? Then STA-BIL Storage Fuel Stabilizer is perfect for you! This is for anyone who wants to store fuel for a long time or keep their engines running smoothly. |
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STA-BIL Diesel Fuel Stabilizer And Performance Improver – Keeps Diesel Fuel Fresh For Up To 12 Months – Lubricates And Cleans The Fuel System – Treats 320 Gallons, 32 fl. oz. (22254) |
This product is perfect for diesel truck owners, farmers, and boat users who store fuel for long times. It keeps their engines clean and running well. |
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STA-BIL Fuel Stabilizer – 16oz |
This STA-BIL Fuel Stabilizer is perfect for boat owners and car lovers who store their gear for long times. It keeps fuel fresh and engines ready to run smooth. |
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STA-BIL 22208 Fuel Stabilizer – 8 oz. Size: 8 Fl. oz., Model: 22208, Outdoor/Garden Store, Repair & Hardware |
This STA-BIL Fuel Stabilizer is perfect for owners of boats, RVs, lawn mowers, and other gas-powered equipment that sit for long periods. It helps keep fuel fresh for up to 24 months, so you can start your gear quickly without hassle. |
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Quicksilver 8M0047922 Quickstor Fuel Treatment and Stabilizer, 12 Oz. |
If you own a boat, a generator, a lawnmower, or other powersports equipment that sits idle for months, this fuel stabilizer is perfect for you. It keeps your gas and ethanol-blended fuel fresh and ready for up to two years. |
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Star Tron Stabilizer+ Fuel Storage & Corrosion Protection, Treats 40 Gallons of Gas – Ideal for Motorcycles, Boats, Lawn Equipment, Classic Cars – 8 OZ Treats 40 Gallons (014808) |
This product is perfect for motorcycle owners, boat owners, and people with lawn equipment or classic cars. It keeps fuel fresh and protects against corrosion so engines run smoothly. |
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Genuine Honda Fuel Stabilizer & Corrosion Inhibitor – 08732-0800 – Compatible with Honda |
Great for people who store fuel for a long time. Ideal for boats and lawn tools with two- or four-stroke engines. |
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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-powered engines who want to fix ethanol problems, save money on fuel, and protect their equipment. It works great for those who need to stabilize fuel in vehicles that sit idle, like seasonal boats or garden tools. |
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Mercury Marine 12oz Quickstor Fuel Stabilizer Treatment 92-8M0047932 |
Is your boat or equipment going into storage? Mercury Quickstor is for you. It keeps your fuel fresh, prevents problems, and protects your engine. |
Detailed Reviews
Discover the top 10 fuel stabilizers for worry-free storage. This guide blends expert picks with real customer experiences. Find the perfect product to protect your engine now. Ensure long-term fuel freshness and reliable performance.
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.

STA-BIL Storage Fuel Stabilizer keeps your fuel fresh for up to 24 months. It fights rust and protects against ethanol damage in your engine. This handy additive works in both 2-cycle and 4-cycle engines.
You get 32 ounces that treat up to 80 gallons of fuel. Just one ounce covers 2.5 gallons, making it easy to use. It replaces parts like Cub Cadet 22216 and 22287.
Stop varnish and gum buildup in stored fuel today. Grab this simple fix and keep your engine running smooth.
| Pros | Cons |
|---|---|
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Perfect For:
This product is perfect for homeowners and people with small engines who store fuel for later use. It keeps fuel fresh for up to 24 months, prevents corrosion, and treats up to 80 gallons of fuel for 2‑cycle and 4‑cycle engines.
Ready to Purchase?
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2. STA-BIL Storage Fuel Stabilizer – Keeps Fuel Fresh for 24 Months – Prevents Corrosion – Gasoline Treatment that Protects Fuel System – Fuel Saver – Treats 25 Gallons – 10 Fl. Oz. (22206)

Don’t let old fuel ruin your engine! STA-BIL Storage Fuel Stabilizer keeps your gasoline fresh for up to 24 months. It protects your engine from the harmful effects of old fuel.
This product is super useful. It prevents corrosion and keeps things clean. Get easy starts every single time!
Just add it to your tank; it is very simple! Using STA-BIL means reliable performance. You’ll be so glad you did.
| Pros | Cons |
|---|---|
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Perfect For:
Want to keep your fuel fresh? Then STA-BIL Storage Fuel Stabilizer is perfect for you! This is for anyone who wants to store fuel for a long time or keep their engines running smoothly.
Ready to Purchase?
3. STA-BIL Diesel Fuel Stabilizer And Performance Improver – Keeps Diesel Fuel Fresh For Up To 12 Months – Lubricates And Cleans The Fuel System – Treats 320 Gallons, 32 fl. oz. (22254)

STA-BIL Diesel Fuel Stabilizer keeps your diesel fuel fresh for up to 12 months. It stops sludge and sediment from building up. This helps your engine run clean and strong.
Our additive cleans and lubricates the whole fuel system. It fights corrosion and cuts down on oxidation for better fuel quality.
It removes water from the fuel to protect your engine. Works with all ULSD and biodiesel blends to treat up to 320 gallons. Use it fresh up to two years after opening.
| Pros | Cons |
|---|---|
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Perfect For:
This product is perfect for diesel truck owners, farmers, and boat users who store fuel for long times. It keeps their engines clean and running well.
Ready to Purchase?
4. STA-BIL Fuel Stabilizer – 16oz

Sta-Bil Fuel Stabilizer stops fuel problems in your machines. It fights ethanol harm and keeps engines ready for action. Trust this top product for smooth starts every time.
Grab a 16oz bottle to protect your equipment. Save time and money with this smart fix.
| Pros | Cons |
|---|---|
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Perfect For:
This STA-BIL Fuel Stabilizer is perfect for boat owners and car lovers who store their gear for long times. It keeps fuel fresh and engines ready to run smooth.
Ready to Purchase?
5. STA-BIL 22208 Fuel Stabilizer – 8 oz. Size: 8 Fl. oz., Model: 22208, Outdoor/Garden Store, Repair & Hardware

STA-BIL Fuel Stabilizer keeps your fuel fresh for up to 24 months during storage. It stops gum and varnish from building up in your engine.
You do not need to drain fuel before storing your equipment. This makes starting up quick and easy after a long break.
This stabilizer works in all gas, even with ethanol. Get peace of mind for your gear. Add it and relax.
| Pros | Cons |
|---|---|
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Perfect For:
This STA-BIL Fuel Stabilizer is perfect for owners of boats, RVs, lawn mowers, and other gas-powered equipment that sit for long periods. It helps keep fuel fresh for up to 24 months, so you can start your gear quickly without hassle.
Ready to Purchase?
6. Quicksilver 8M0047922 Quickstor Fuel Treatment and Stabilizer, 12 Oz.

Quicksilver 8M0047922 Quickstor Fuel Treatment and Stabilizer is a powerful solution designed to protect your fuel during long storage. It’s perfect for boats, generators, lawnmowers, and other powersports equipment. This product keeps your fuel fresh and ready to go when you need it most.
It prevents gas from breaking down and oxidizing. The stabilizer works for up to two years. Just 1 oz. treats 5 gallons of fuel, making it easy and economical to use.
Produced to meet Mercury Marine standards, this fuel treatment maximizes engine performance. It ensures your equipment runs smoothly and reliably every time. Stay confident knowing your fuel is protected for the long haul.
| Pros | Cons |
|---|---|
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Perfect For:
If you own a boat, a generator, a lawnmower, or other powersports equipment that sits idle for months, this fuel stabilizer is perfect for you. It keeps your gas and ethanol-blended fuel fresh and ready for up to two years.
Ready to Purchase?
7. Star Tron Stabilizer+ Fuel Storage & Corrosion Protection, Treats 40 Gallons of Gas – Ideal for Motorcycles, Boats, Lawn Equipment, Classic Cars – 8 OZ Treats 40 Gallons (014808)

Star Tron Stabilizer+ keeps gas fresh for up to two years. It stops rust inside engines and tanks. One ounce treats five gallons of fuel.
Just pour it in before you store your stuff. It works for bikes, boats, mowers, and old cars.
It fights gum, varnish, and water in gas. Your engine will run smooth and last longer.
| Pros | Cons |
|---|---|
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Perfect For:
This product is perfect for motorcycle owners, boat owners, and people with lawn equipment or classic cars. It keeps fuel fresh and protects against corrosion so engines run smoothly.
Ready to Purchase?
8. Genuine Honda Fuel Stabilizer & Corrosion Inhibitor – 08732-0800 – Compatible with Honda

Protect your Honda’s engine from fuel decay. This genuine Honda stabilizer keeps gas stable for up to a year. Just add 1 ounce to every 5 gallons of fuel for long-term storage.
It works in 2 and 4 cycle engines. The formula fights problems from ethanol in fuel.
Treats up to 80 gallons with its 8 fl. oz. bottle. Honda part: 08732-0800. Keep your ride running smooth.
| Pros | Cons |
|---|---|
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Perfect For:
Great for people who store fuel for a long time. Ideal for boats and lawn tools with two- or four-stroke engines.
Ready to Purchase?
9. 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 BRITE Star Tron Enzyme Fuel Treatment is a simple, ALL-ROUND ENGINE SOLUTION for engines. It works with any fuel and any vehicle.
It tackles ethanol problems and is a proven ETHANOL PROBLEM SOLVER. It stabilizes fuel up to 2 years and can revitalize old fuel, a true OLD FUEL REVITALIZER.
It is an EMISSION REDUCER. It is EASY TO USE. No exact amount is needed.
| Pros | Cons |
|---|---|
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Perfect For:
Star Tron Enzyme Fuel Treatment is perfect for boat owners and anyone with gas-powered engines who want to fix ethanol problems, save money on fuel, and protect their equipment. It works great for those who need to stabilize fuel in vehicles that sit idle, like seasonal boats or garden tools.
Ready to Purchase?
10. Mercury Marine 12oz Quickstor Fuel Stabilizer Treatment 92-8M0047932

Keep your engine running smoothly with the Mercury Marine 12oz Quickstor Fuel Stabilizer Treatment. This powerful formula is perfect for longer storage periods. Just one ounce can treat up to 5 gallons of fuel, and a full 12oz bottle can protect 60 gallons.
It’s easy to use. Add it to your fuel before storing your engine. It keeps the fuel fresh, preventing breakdown and oxidation for up to a year. It also stops gum and varnish from forming in your fuel lines and tanks.
This stabilizer is safe for all engines, including those with catalytic converters. Keep your engine clean and reliable with this simple solution. Protect your fuel system so it starts easily and runs smoothly every time.
| Pros | Cons |
|---|---|
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Perfect For:
Is your boat or equipment going into storage? Mercury Quickstor is for you. It keeps your fuel fresh, prevents problems, and protects your engine.
Ready to Purchase?
Buying Guide
Fuel stabilizers help keep engines safe during long storage. They stop fuel from going bad and save repair costs.
Users love how these products make starting easy after months off. One said, “My mower fired right up after winter with no issues.” Another shared, “My boat engine ran smooth even after two years in storage.”
- Engine Type: Check if the stabilizer fits gas or diesel engines. Most work on both 2-stroke and 4-stroke types. Pick one for your gear to avoid mix-ups.
- Storage Time: Look for how long it keeps fuel fresh. Top picks last up to 24 months. Match this to your storage needs for best results.
- Fuel Type: See if it handles ethanol or biodiesel blends. Many fight ethanol damage well. Use the right one to stop rust and gum.
- Dose Amount: Note the size and how much fuel it treats. Some treat 40 gallons with one ounce. Slim bottles fit tight spots and last long.
- Brand Trust: Go for known brands like STA-BIL or Star Tron. They offer clean fuel and smooth runs. Check reviews for real-world proof of good work.
- Price and Value: Compare cost per gallon treated. Cheaper options may treat more fuel. It saves money if you store lots of gear.
- Easy Use: Find ones you just add to the tank. No drain step cuts time. Grab variants for bikes or boats to fit your tools.