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ckissick's Avatar
 
Join Date: Jan 2003
Location: the beach
Posts: 5,149
patching a leaky oil tank

I tried a search to no avail. My oil tank, a 1973 and later type, is leaking too much now to ignore. I think the leak is coming from the upper rear tab for bolting the tank to the body. Must be a crack where the tab attaches to the tank.

Should I try to get this fixed, or just buy a used tank? (a new tank is $900!) In other words, can the aluminum be effectively welded or patched in any other way?

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Charlie
1966 912 Polo Red
1950 VW Bug
1983 VW Westfalia; 1989 VW Syncro Tristar Doka
Old 05-11-2005, 01:49 PM
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I hade a leak where my drain plug flare meets the tank. I used a two part epoxy to both seal it up and strengthen the joint.
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Old 05-11-2005, 01:51 PM
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Join Date: Dec 2001
Location: Boulder, CO
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A compotent welder should be able to fix this without a prolem. Just make sure to clean it well afterwards. I'm not sure about the '73 tanks, but the one in my car is steel, and I'm sure it could be brazed or welded. If yours is aluminum, there are always good aluminum welders out there, or I've seen some sources for things you might be able to do yourself here:

http://www.muggyweld.com/products.html
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Old 05-11-2005, 02:28 PM
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my 73.5 tank is steel with a copper plating on the outer surface, then the paint.
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Old 05-11-2005, 04:32 PM
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They're definitely steel, and prone to rust around those tabs.
A lot of dirt accumulates around the inevitably oily upper area of the tank, becomes oily mud, accumulates moisture and ... you know the rest.
Pull it out and see what you've got. Hopefully it can be patched -- even used tanks are expensive.
Good luck
Joe

Old 05-11-2005, 07:07 PM
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