Add this treatment to your marine fuel tank to clean fuel injectors and carburetor jets. It also cleans and lubricates critical upper engine areas, helps reduce long-term engine wear and prevents corrosion caused by ethanol and water. The special formula stabilizes tank fuel for up to 2 years, and is safe for all 2- and 4-stroke gas-powered inboard and outboard marine engines. It's also great for all types of personal watercraft.