A coat of POR15 would provide good protection of the newly cleaned surface. Then the rubberized undercoat could provide good abrasian resistance. The vinegar thing has me thinking. The floor pan of my ‘57 beetle has lots of surface rust but is not yet perforated. Maybe I can pour a couple of gallons of vinegar into the floor pan and let it sit for a week. That may provide a great solution (excuse the pun) for removing that rust!Much of the fender interior plating is gone in the 7 day section. You see the mottled dull silverish metal. I am thinking it was not very thick and road use degraded it. When the other side has 7 days soak I will rinse clean and shoot a rubberized undercoat from a rattle can. I will save some of the vinegar to soak sockets in. Many of mine are rusty in the 1/4, 3/8 and 1/2 square drive. Can't complain about that rust though, I bought a fairly complete Craftsman set in Cold Lake Canada in 1986 when I needed to rebuild my 2 liter BMW 4 banger from my 76 2002 sedan. So I have most of them still except the 10mm.
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