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By 58rancho - 14 Years Ago
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My 58 Ranchero has a drain plug in the bottom of the gas tank. I have had a very small leak since I got the vehicle about two years ago. I tried teflon tape, but I think the gasohol got to it. This weekend, I tried some gas tank sealer (two part epoxy putty), let it set up for 24 hrs, put in about 5 gals and it is already damp. Any other ideas?
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By Richard Head - 14 Years Ago
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I've had the same problem on my '55 for a long time. I have slowed it down at times but never got it stopped. I'm about ready to weld the SOB. 
Hope somebody can help you (and me) with some suggestions.
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By Nathan Soukup - 14 Years Ago
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Dont weld it! Try draining the tank dry,then clean the drain plug threads with some brake cleaner.Then apply some red lock tight.
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By Duck - 14 Years Ago
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I've always had good luck using Permatex's "Formagasket"(the old school stuff that comes in the small white tube) Use the non-hardening (1B, I think) as a thread sealer- works every time... /Duck
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By 55vickey - 14 Years Ago
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I'm with Duck, worked for me, I put it on in the off season, by the time I gassed it up again, never a leak, been 9 years. Gary
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By 58rancho - 14 Years Ago
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OK, drained tank again and used Form-a-gasket non-hardening. It still leaks. Is it possible I have the wrong gas cap? Could the cap be pressurizing the tank?
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By oldcarmark - 14 Years Ago
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Maybe its time to drain it and take it to a rad shop who fixs gas tanks.
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By 58rancho - 14 Years Ago
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That would be my final option, I'm just trying the cheaper options first.
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By 29abone - 14 Years Ago
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Perhaps lightly rethreading and using a new plug.
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