Top 10 Best fuel additive in 2026

Main highlights

• •PRESERVES FUEL: This fuel stabilizer ensures keeps gasoline fresh for up to 24 months for storing vehicles that are not in use, boats, outdoor power equipment during winter months, or stocking up on fuel.
• •PREVENTS CORROSION: Safeguard your engine & fuel system from the detrimental effects of both ethanol & non-ethanol fuels. Maintaining the integrity of fuel system components, it ensures optimal performance & longevity, promoting a healthier fuel system.
• •EASY STARTS: Guarantees quick & easy starts for your equipment & vehicles, providing peace of mind when storing them. With its reliable performance, you can confidently store your items, knowing they will start smoothly whenever needed.
• •DIRECTIONS: Pour contents directly into the fuel tank before adding gasoline. Use 1 oz of STA-BIL Storage for every 2.5 gallons of gas. After adding the fuel, run the engine for 5 minutes to treat the entire fuel system.
• •EXPIRATION DATE: 2 years from the opening of product, or 5 years from date of production (5-digit code on the back of the bottle; read as YYDDD). YY indicates the year of production. DDD represents the number of the day of that year of production.
• •Only STA-BIL’s scientifically designed proprietary formulas of antioxidants, anti-corrosives, & detergents protects all types of engines & is consistently ranked as America’s #1 fuel stabilizer, outperforming competition in independent lab testing.

Main highlights

• •Great Product

Main highlights

• •FUEL SYSTEM CLEANER: Cleanses the entire fuel system using PEA additives, including fuel injectors, lines, & fuel pumps. This advanced formula removes water, gum, and varnish, ensuring optimal performance & longevity of your fuel system while preventing corrosion.
• •CORROSION PROTECTION: Industry-leading rust and corrosion protection & designed for in-season cleaning & the protection of internal fuel system parts.
• •PERFORMANCE BOOSTER: Designed to optimize fuel performance which contributes to enhanced gas mileage & improved engine power. This advanced formula cleans & protects the fuel system, allowing for efficient combustion & prolonged engine life.
• •DIRECTIONS: Pour directly into fuel tank prior to fill up. Use 1 oz for every 10 gallons of fuel. Run the engine for 5 minutes to treat the entire fuel system.
• •YEAR-ROUND PROTECTION: Pair STA-BIL In-Season Marine Protection with STA-BIL Storage, providing a complete solution for both in-season operation & storage needs during the winter ensuring that your watercrafts remains in peak condition year-round.
• •FUEL STABILIZER: Stabilizes fuel in-season when watercraft is idle. For specific storage needs, use our STA-BIL storage fuel stabilizer product.

Main highlights

• •FIXES ROUGH RUNNING ENGINES – STA-BIL Fast Fix eats away at gum and varnish that cause rough starts and no starts in your small engine equipment. This easy-to-use fuel additive combats the effects of ethanol blended gasoline
• •ELIMINATES WATER – This fuel injector cleaner helps to remove water that may get into your fuel system. Penetrating deep into the fuel line, this simple fuel additive prevents the need to disassemble the engine. The 8 oz. bottle of this alcohol-free fuel additive treats up to 20 gallons of fuel
• •VERSATILE – Compatible with all small engines, adding STA-BIL Fast Fix to your 2-cycle or 4-cycle small engine cleans carburetors and injectors while acting as a water remover. Use this product in your lawn mower, chainsaw, trimmer, snow blower, generator, and more
• •DIRECTIONS – For rough running engines use 1 oz. of STA-BIL Fast Fix per 2.5 gallons of fuel. Fill with fresh gas. Start the engine and allow to run for 15 minutes to allow the additive to work its way through the fuel system. If the engine does not start, attempt to turn it over a few times so the additive makes its way through the fuel system and allow to sit overnight. Attempt to start again, if problems persist you may need to have it looked at by a mechanic
• •All STA-BIL branded products are good for use up to 2 years after the bottle was opened. Be sure to mark the date you opened the bottle on the back of your package!

Main highlights

• •FUEL SYSTEM CLEANER: Cleanses the entire fuel system, including fuel injectors, lines, & fuel pumps, this formula removes water, gum, & varnish, ensuring optimal performance & longevity of your fuel system while preventing corrosion.
• •CORROSION PROTECTION: Industry-leading rust and corrosion protection for all internal fuel system parts.
• •MPG BOOSTER: Designed to optimize fuel performance which contributes to enhanced gas mileage & improved engine power. This advanced formula cleans & protects the fuel system, allowing for efficient combustion & prolonged engine life.
• •DIRECTIONS: New name, same formula as our 360* Protection. Pour directly into fuel tank prior to fill up. Use 1 oz for every 5 gallons of fuel.
• •YEAR-ROUND PROTECTION: Pair STA-BIL In-Season Protection with STA-BIL Storage, providing a complete solution for both in-season operation & storage needs during the winter ensuring that your equipment remains in peak condition year-round.
• •FUEL STABILIZER: Stabilizes fuel in-season for gasoline sitting in collector cars, gas cans, etc. For specific storage needs, use our storage fuel stabilizer product.

Main highlights

• •FUEL SYSTEM CLEANER: Cleanses the entire fuel system, including fuel injectors, lines, & fuel pumps, this formula removes water, gum, & varnish, ensuring optimal performance & longevity of your fuel system while preventing corrosion.
• •CORROSION PROTECTION: Industry-leading rust and corrosion protection for all internal fuel system parts.
• •MPG BOOSTER: Designed to optimize fuel performance which contributes to enhanced gas mileage & improved engine power. This advanced formula cleans & protects the fuel system, allowing for efficient combustion & prolonged engine life.
• •DIRECTIONS: New name, same formula as our 360* Protection. Pour directly into fuel tank prior to fill up. Use 1 oz for every 5 gallons of fuel.
• •YEAR-ROUND PROTECTION: Pair STA-BIL In-Season Protection with STA-BIL Storage, providing a complete solution for both in-season operation & storage needs during the winter ensuring that your equipment remains in peak condition year-round.
• •FUEL STABILIZER: Stabilizes fuel in-season for gasoline sitting in collector cars, gas cans, etc. For specific storage needs, use our storage fuel stabilizer product.

Main highlights

• •Keeps fuel fresh for up to 24 months during storage
• •Eliminates the need to drain fuel prior to storage
• •Ensures quick, easy starts after storage
• •Prevents gum and varnish build-up
• •Effective in all gasoline, including Ethanol blends

Main highlights

Main highlights

• •32-oz bottle
• •Stops formation of gum and varnish
• •Keeps stored fuel fresh for quick easy starts
• •Store engine without draining fuel
• •Prevents corrosion and cleans fuel system