Is this cool?Some areas are a little rusty and appear to have some salt residue on the exterior.Is it OK to gently rinse off,let sun-dry and then liberally apply corrosionblock to all the metal parts?Where would all that water run to...are there drain holes below whwew I can't see them.The motor is a 91 Johnson 88 Special.Also ,what's the recommended type of grease to squirt into the zerk fittings on this motor?