Star Tron Enzyme Fuel Treatment is a multifunctional fuel additive with a unique enzyme technology that allows all engines to start easily and run smoothly, even after sitting idle for months. It also eliminates and prevents ethanol fuel problems. Star Tron breaks down excess water and sludge to sub-micron size, allowing it to be safely burned away during normal engine operation which helps prevent phase separation. The additive increases fuel economy by cleaning the entire fuel delivery system, removing performance-robbing gum and varnish deposits, while modifying how fuel burns. This results in more complete and uniform combustion, maximum performance, increased fuel efficiency, reduced emissions, and reliable operation. Stabilizes fuel for up to 2 years. Can be used in all gas outboards, inboards, cars, trucks, motorcycles, ATVS, snowmobiles, small engines, and outdoor power equipment. Removes performance-robbing deposits Stabilizes fuel for up to 2 years | Star Tron Gasoline Additive, 16 oz