We Use CookiesWe use cookies to enhance the security, performance,
functionality and for analytical and promotional activities. By continuing to browse this site you
are agreeing to our privacy policy
10 Best Ethanol Fuel Treatment 2025 in the United States
#1
Winner
Gumout 510023 Regane High Mileage Fuel System Cleaner, 6 oz. (Pack of 6) (510023W-6PK)
The Gumout 510023 Regane High Mileage Fuel System Cleaner uses advanced CarbonClear technology to enhance cleaning power with a combination of PEA, PIBA, and a patented technology. This product is designed to fight ethanol and water corrosion, prevent carbon build-up, and condition the upper cylinder to reduce friction and wear in high mileage vehicles. It promises maximized performance and improved fuel economy in just one fill-up, making it a potentially strong choice for maintaining the health of your vehicle's fuel system.
Rating
9.9
Chosen by1,434
Stabilization
Compatibility
Ease of Use
Most important from
5681 reviews
#2
STA-BIL 360 Marine Ethanol Treatment and Fuel Stabilizer - Prevents Corrosion - Helps Clean Fuel System For Improved In-Season Performance - Treats Up To 100 Gallons, 10 fl. oz. (22241)
The STA-BIL 22241 360° Marine - 10 oz. ethanol-fuel-treatment is designed with several key features that can benefit users, especially those using ethanol-blended fuels. One of its standout strengths is its ability to prevent corrosion both above and below the fuel line, which is something not many other additives offer. This can be particularly useful in marine environments where fuel systems are prone to corrosion due to moisture exposure.
Rating
9.8
Stabilization
Most important from
1157 reviews
#3
Gumout 510013W-6PK Fuel System Cleaner, 6 Pack
The Gumout 510013 High Mileage Fuel Injector Cleaner is specially formulated for engines with over 75,000 miles, effectively removing carbon deposits from fuel injectors, intake valves, and ports. This results in restored performance and fuel economy while reducing emissions. One of its strengths is its compatibility with turbocharged and supercharged vehicles, and it is also oxygen sensor safe.
Top 10 Best Ethanol Fuel Treatment 2025 in the United States
#1
Winner
Gumout 510023 Regane High Mileage Fuel System Cleaner, 6 oz. (Pack of 6) (510023W-6PK)
Gumout 510023 Regane High Mileage Fuel System Cleaner, 6 oz. (Pack of 6) (510023W-6PK)
Water Removal: Yes
Corrosion Protection: Yes
Stabilization: Yes
Compatibility: Universal fit
Ease of Use: User-friendly
Chosen by 1434 this week
STA-BIL 360 Marine Ethanol Treatment and Fuel Stabilizer - Prevents Corrosion - Helps Clean Fuel System For Improved In-Season Performance - Treats Up To 100 Gallons, 10 fl. oz. (22241)
STA-BIL 360 Marine Ethanol Treatment and Fuel Stabilizer - Prevents Corrosion - Helps Clean Fuel System For Improved In-Season Performance - Treats Up To 100 Gallons, 10 fl. oz. (22241)
Corrosion Protection: prevents corrosion above and below fuel line
Stabilization: stabilizes fuel up to 12 months
Compatibility: ethanol-blended fuels
Gumout 510013W-6PK Fuel System Cleaner, 6 Pack
Gumout 510013W-6PK Fuel System Cleaner, 6 Pack
Compatibility: turbocharged and supercharged vehicles
Ease of Use: apply every 3,000 miles
Star Tron Enzyme Fuel Treatment Concentrate, 16 Fl. Oz. – Treats up to 256 Gallons – Rejuvenate & Stabilize Old Gasoline, Cure Ethanol Problems, Improve MPG, Reduce Emissions, Increase Horsepower
Star Tron Enzyme Fuel Treatment Concentrate, 16 Fl. Oz. – Treats up to 256 Gallons – Rejuvenate & Stabilize Old Gasoline, Cure Ethanol Problems, Improve MPG, Reduce Emissions, Increase Horsepower
Water Removal: excels in water removal
Corrosion Protection: robust protection against corrosion
Stabilization: fuel remains stable for two years
Compatibility: compatible with all engines and fuels
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, 24 oz (2 Pack) Keeps Fuel Fresh, Gasoline Treatment Fuel Additive That Protects Fuel System, Gas Stabilizer for Fuel Storage, Antioxidant and Anticorrosive
Water Removal: phase separation inhibitor reduces water problems
Corrosion Protection: includes anticorrosives, protects against corrosion
Stabilization: slows fuel aging with antioxidants
Compatibility: bonds 2-cycle oil to ethanol fuels
Ease of Use: 24 oz size; 2-pack for treatments
Related Products
Ethanol Shield Fuel Stabilizer 1 Gallon (128 oz) Prevents Corrosion - Gasoline Treatment That Protects Fuel System- Fuel Saver - Treats up to 1280 Gallons.
Ethanol Shield Fuel Stabilizer 1 Gallon (128 oz) Prevents Corrosion - Gasoline Treatment That Protects Fuel System- Fuel Saver - Treats up to 1280 Gallons.
Water Removal: addresses water issues
Corrosion Protection: prevents corrosion
Stabilization: up to 3 years
Compatibility: works in all engines
Ease of Use: ease of use
STA-BIL In-Season Protection Fuel System Treatment | Full Protection Fuel System Cleaner, Injector Cleaner, Increases MPG, Prevents Corrosion, 32 Fl. Oz.
STA-BIL In-Season Protection Fuel System Treatment | Full Protection Fuel System Cleaner, Injector Cleaner, Increases MPG, Prevents Corrosion, 32 Fl. Oz.
Water Removal: removes moisture from fuel system
Corrosion Protection: prevents ethanol fuel corrosion
Stabilization: stabilizes fuel up to 12 months
Compatibility: works with all gasoline engines
Ease of Use: clear instructions, measuring markers
PRI CP122 Pri-G Gasoline Treatment - 32 oz.
PRI CP122 Pri-G Gasoline Treatment - 32 oz.
Water Removal: prevents water-caused phase separation
Corrosion Protection: protects engine from damage
Stabilization: restores old fuel for long storage
Compatibility: compatible with ethanol fuels
Ease of Use: add directly to your tank
#10
Star Tron Enzyme Fuel Treatment - Small Engine Formula - 16 Oz Treats up to 96 Gals, Gas Additive Rejuvenates & Stabilizes Old Gasoline, Cures & Prevents Ethanol Problems, Improves MPG (014316)
Star Tron Enzyme Fuel Treatment - Small Engine Formula - 16 Oz Treats up to 96 Gals, Gas Additive Rejuvenates & Stabilizes Old Gasoline, Cures & Prevents Ethanol Problems, Improves MPG (014316)
Water Removal: Disperses water into tiny droplets
Stabilization: Stabilizes fuel for two years
Compatibility: Suitable for many engines and fuels
Ease of Use: One ounce per six gallons
Recommended lists
Top rated
Fuel Treatments
How do we rank products for you?
Our technology thoroughly searches through the online shopping world, reviewing hundreds of sites. We then process and analyze this information, updating in real-time to bring you the latest top-rated products. This way, you always get the best and most current options available.
Buying Guide for the Best Ethanol Fuel Treatment
Choosing the right ethanol fuel treatment is essential for maintaining the performance and longevity of your engine. Ethanol fuel treatments are designed to counteract the negative effects of ethanol-blended fuels, such as corrosion, water absorption, and phase separation. When selecting an ethanol fuel treatment, it's important to consider several key specifications to ensure you get the best product for your needs. Understanding these specifications will help you make an informed decision and keep your engine running smoothly.Water RemovalWater removal is a crucial feature of ethanol fuel treatments because ethanol can absorb moisture from the air, leading to water accumulation in the fuel tank. This can cause phase separation, where water and ethanol separate from the gasoline, leading to engine performance issues and potential damage. Treatments with effective water removal properties help prevent this by dispersing the water throughout the fuel so it can be safely burned off during combustion. If you live in a humid climate or store your vehicle for long periods, prioritize a treatment with strong water removal capabilities.
Corrosion ProtectionCorrosion protection is important because ethanol can be corrosive to certain metals and materials used in fuel systems. Over time, this can lead to rust and damage to fuel lines, injectors, and other components. Ethanol fuel treatments with corrosion inhibitors help protect these parts by forming a protective barrier on metal surfaces. If you have an older vehicle or equipment with metal fuel system components, look for a treatment that offers robust corrosion protection to extend the life of your engine.
StabilizationFuel stabilization is essential for preventing fuel degradation over time. Ethanol-blended fuels can break down more quickly than pure gasoline, leading to gum and varnish buildup that can clog fuel systems and reduce engine performance. A good ethanol fuel treatment will stabilize the fuel, keeping it fresh and effective for longer periods. This is particularly important if you store your vehicle or equipment for extended periods, such as during the off-season. Choose a treatment with strong stabilization properties to ensure your fuel remains in good condition.
CompatibilityCompatibility refers to how well the ethanol fuel treatment works with different types of engines and fuel systems. Some treatments are designed specifically for certain types of engines, such as marine engines, small engines, or high-performance engines. It's important to choose a treatment that is compatible with your specific engine type to ensure optimal performance and protection. Check the product label or manufacturer's recommendations to ensure the treatment is suitable for your vehicle or equipment.
Ease of UseEase of use is a practical consideration when selecting an ethanol fuel treatment. Some treatments come in pre-measured bottles or have easy-to-use measuring systems, making it simple to add the correct amount to your fuel tank. Others may require more precise measuring or mixing. If convenience is important to you, look for a treatment that is easy to use and doesn't require complicated measuring or mixing. This will make it more likely that you'll use the treatment regularly, ensuring consistent protection for your engine.