I live 4 blocks from the Ocean, and the salt air and fog wreaks havoc on anything metal that is parked outside. I didn't even know that oil spraying was a thing. One part on my K5 that has been hit the worst is the upper part of the windshield frame. I can poke my finger through the inside, all the way to the outside. I have another k5 body that I am trying to prep to swap out, and am concerned about the same area. What should I do to protect the inside of the windshield frame from rust?