Star*Tron� Super Concentrated Gas Additive (16 oz), Notes 4: It works in boats, cars, motorcycles, small equipment or any other 2 or 4-cycle engine., Size: 16 oz, Notes 2: Star*Tron Enzyme Fuel Treatment uses unique enzyme technology to improve overall fuel quality., Notes 2: Star*Tron makes engines start easily and run smoothly., Notes 3: It “cures & prevents” Ethanol fuel problems such as water in fuel, or lost power. It also helps, Notes 3: prevent phase separation, removes gums, varnish and carbon deposits and will stabilize fuel for up, Notes 3: to 2 years.