32oz Sta-Bil Marine Formula Ethanol Treatment - Gold Eagle Sta-Bil Marine Formula Blue treats 320gallons of gasoline. Best ethanol problem fighter. More than 4Xs the fuel system cleaner. Prevents corrosion from moisture and ethanol - induced water attraction. Improves marine engine performance year-round. Recommended to be used at Every Fill Up. Use in All 2- and 4-cycle marine gasoline engines. Also safe to use in All stored or infrequently driven collector cars, motor homes, tractors, snowmobiles, motorcycles, lawnmowers and All outdoor power equipment. Just for Seasonal Storage. 32oz bottle. 1 per package.