Spray on Corrosion Guard forms a water resistant barrier on non-painted and painted surfaces to protect from wear and tear. 
11 oz spray can 
Use to prevent rust from forming on out drives, lower units and power trim motors and components or other metal surfaces. 
Can also be used to prevent further paint damage in areas where undercutting and blistering have occurred.Do not spray on surfaces coated with antifouling or biocide paint