STA-BIL Fuel Stabilizer keeps fuel fresh for quick, easy starts after storage. It removes water to prevent corrosion and cleanses carburetors and fuel injectors. This product also protects gas engines from gum, varnish, rust and corrosion. It also prolongs the life of any engine. Eliminate the need to drain the fuel of your 2 or 4 cycle gas engine by treating the fuel with STA-BIL before storing. Use STA-BIL Fuel Stabilizer in any gasoline-powered vehicle or equipment you plan to store for 30-days or longer. It keeps the fuel fresh for up to 24 months during storage, eliminating the need to drain your tank. Works effectively in all gasoline blends. This includes Ethanol-blended fuel, up to E-85. Best use STA-BIL only with fresh fuel. Keep gas can or tank 95% full to avoid condensation build up in gas tank during storage. Run Engine for 5 minutes after adding product to treat entire fuel system. Product does not contain alcohol. One 16-ounce quick measure easy pour bottle treats up to 40-gallons of fuel.