Please don't get anything containing silicone nor oil near that seam. You won't like it if you do. Without sanding and repainting about the only thing you could do would be to paint the seam with something clear (like RustOleum) and let it be for a while. Use a small brush like an artist's brush and give it a couple of coats. As for seams in doors, what I do is to remove the door, turn it on one side, take about 1 ounce of oil-based enamel and pour it in the door so that it runs into the seam between the skin and the back panel. Then move the door from side to side to let that paint flow into the seam nicely from top to bottom. And then let it dry still sitting up on the side. Repeat for the other side and when you get to the bottom seam, be sure to cover all the vents with masking tape. Once the paint is dry, remove the masking tape and use a hobby knife to cut any paint that skinned over. That usually will keep water from wicking into that seam (where it is guaranteed to cause rust). Good luck.


~ Jon
1952 1/2 ton with 1959 235 | T5 with 3.07 rear end