Re: Rust prevention
Nothing succeeds like an excess so the story goes, just as in the case of rust. If you paint over it, no matter what the paint it will come back, that is the scientific guarantee.
Your correct, they never coated the interior pieces of sheet metal in their entirety. Heck that lasted 50 years.
The only sure cure is every spec of it, Zinc rich epoxy prime then.....paint.
I have tried many things, surprising enough soaking parts in Vinegar which do not have seems or crevices works dam well.
Killing rust forever will not happen, its just the process you choose which can bring results.
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