I have a 64 c10 in-cab tank and I can't get the sender gasket to seal for long.
First I tried Aviation Form-a-Gasket Sealant - lasted ~1 month then started seeping.
Second I tried Permatex #1 - lasted ~6 months and now it's seeping again.
I'm using the rubber gasket that came with the new sender. Is there some other gasket material that'll work better? Is there a better gasket sealer?
Tanks!
Terry