Marine 66 is a multi-purpose oil designed to prevent damage due to water and salt atmosphere in marine engines and boating equipment. It forms a thin film that lubricates moving parts for smooth action and protects metals from corrosion caused by humidity and salt air for extended periods. Superior penetrating power breaks through rust and corrosion, loosens rusted parts and keeps them free, displaces water from wet equipment and cleans away scale and dirt. It displaces moisture out of ignition systems to help start wet engines.