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Cast iron fuel tank cap prep question

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1 year 5 months ago #249019 by Haus
I'm about to put my fuel cap (4A60) back together. Should I coat or paint it inside? It was a bit rusty, but I couldn't tell whether it had originally been sealed inside.

 

​​​​​​Paul.
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1 year 5 months ago #249020 by Dandy Dave
I don't believe they were ever painted inside as they were always metal color when we put fuel in them years ago. If you plan on coating it with something I would sandblast/ glass bead the inside first so paint will not flake off and get it the fuel in the future.

1940 Cat 12 Grader 6M17
1956 Cat D2-5U
1956 Cat D6- 9U 23721
Copake, NY.

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1 year 5 months ago #249034 by trainzkid88
i would just give it a squirt of lanolin spray let it soak in and wipe off the excess. every so often give it another spray. do this after its been painted on the outside.

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