Sta-Bil Storage 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 engine from gum, varnish, rust and corrosion and prolongs the life of any engine. Eliminate the need to drain the fuel of your 2 or 4 cycle engine by treating the fuel with Sta-Bil before storing. This 8-oz., easy to use measure chamber bottle, treats up to 20 Gal. of fuel. 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 12 months during storage, eliminating the need to drain your tank. Works effectively in all gasoline blends, including Ethanol-blended fuel, up to E-85. 1-oz. (30-milliliter) treats up to 2-1/2 Gal. (9.5-liters) of fuel. Use Sta-Bil only with fresh fuel, and keep gas can or tank 95% full to avoid condensation build up in tank during storage. Run Engine for 5 minutes after adding product to treat entire fuel system. Product does not contain alcohol. Perfect for collector cars, generators, lawn mowers, snow blowers, etc.