This is the Sta-Bil treatment for everyday use. It is an ideal solution for engines which are not run every day, as new ethanol-blend fuels can start to degrade in as little as 30 days. Sta-Bil Marine Formula does a superior job of protecting the fuel tank, fuel lines and complete fuel system from the corrosive effects of the ethanol in your fuel. It also keeps the ethanol in the fuel, where you want it, by preventing any water present from absorbing the ethanol. Marine Formula Ethanol Treatment contains more corrosion inhibitors and cleaners than regular Sta-Bil. A little goes a long way - treats 4 times as much fuel per ounce than regular Sta-Bil. Keeps fuel fresh for quick, easy starts Prolongs engine life For all 2-cycle and 4-cycle gasoline engines More than four times the fuel system cleaner than in regular Sta-Bil Double the corrosion preventer than in regular Sta-Bil Prevents corrosion from moisture Prevents ethanol from mixing with any water in your tank Improves marine engine performance year round, not just for seasonal storageIs there an additive that removes ethanol from gasoline? The answer is no. It is advisable to steer clear of any fuel additive that promises to eliminate ethanol from mixed gasoline, as the validity of this assertion is uncertain.