STA-BIL 360 Protection is America's most preferred ethanol treatment. Engineered to fight the harmful effects caused by today's fuels, this revolutionary formula is the only fuel additive you need. Use it with every fill up to help keep your engine running cleaner, leaner, smoother, and stronger. America's #1 Ethanol Treatment Use STA-BIL 360 Protection at every fill-up Keeps fuel fresh for up to 12 months Cleans the fuel system to increase power and fuel efficiency Prevents corrosion caused by moisture and today's ethanol blended fuels For all gasoline engines, including 2-cycle Use in your vehicles, outdoor power equipment, motorcycles, and other small engine vehicles Ultimate treatment and protection against ethanol blended fuels, non-ethanol fuels, and condensationUSAGE1 ounce treats up to 5 gallons of fuel. Recommended for use at every fill up.