STA-BIL MARINE ETHANOL FUEL TREATMENT AND STABILIZER 8OZ 22239-57-1109

What It Is

STA-BIL MARINE ETHANOL FUEL TREATMENT AND STABILIZER is a fuel additive designed to prevent ethanol-related fuel issues in small engines, including lawn mowers, tractors, and other outdoor power equipment. It stabilizes fuel for up to 12 months and protects against corrosion and gum buildup.

Fitment & Compatibility

This is a universal additive—no specific mower brand or model fitment needed. Check that your mower uses gasoline with ethanol (E10 or E15). Compatible with 2-cycle and 4-cycle engines, including those in push mowers, riding mowers, and zero-turn mowers. Works with all fuel tank sizes; the 8 oz bottle treats up to 20 gallons of fuel (1 oz per 2.5 gallons). Not for diesel or electric mowers. No OEM or aftermarket restrictions—simply add to fresh fuel before storage or use.

Key Things to Know

• Quality: Marine-grade formula offers extra corrosion protection compared to standard STA-BIL, ideal for high-humidity or salt-air environments. Rated 4.9/5 for reliability.
• Installation: Extremely easy—just pour into fuel tank before filling. No tools or mixing required. Shake bottle before use.
• Gotcha: Overdosing won’t harm the engine, but follow ratio for cost efficiency. Do not use with fuel that already contains stabilizer (e.g., some premium gas).
• Storage: Best added to fresh fuel; old or stale fuel may still cause issues. Treat before storing mower for winter or long periods.

Should You Buy It

Buy this if you use ethanol-blended gas in your mower and want to prevent carburetor clogs, fuel system corrosion, and starting problems during storage. Ideal for seasonal users or those in coastal areas. Skip if you use ethanol-free fuel or store equipment for less than 30 days.