Mercury - Corrosion Guard - 11 oz - 2-pack - 92-80287855 Corrosion Guard is a rust inhibitor that forms a water resistant barrier on non-painted and painted surfaces. Size - 11 oz. 2-Pack Use to prevent rust from forming on out drives Lower units and power trim motors and components of other metal surfaces Can also be used to prevent further paint damage in areas where undercutting and blistering have occurred Do not spray on drive belts.