360 Marine, America's #1 Ethanol Treatment, is engineered specially for the harsh coastal climates. This industry leading formula prevents corrosion, cleans the fuel system and prevents the buildup of unwanted gum and varnish; ensuring your boat or jet ski are ready to go whenever you need them. 1 ounce (30 milliliters) treats up to 10 gallons (19 liters) of fuel. America's # 1 Ethanol TreatmentUse for storage and will keep fuel fresh for up to 12 monthsUse at every fill-upUltimate treatment and protection against ethanol and condensationEffective in Non-Ethanol FuelsPrevent corrosion above and below the fuel line*Cleans the fuel system to improve performance*Increases power and fuel efficiency*For all gasoline engines, including 2-CycleUse in your boat, jet ski, water sport engines, vehicles, small engines, generators