Marc
I don't want to be a messenger of bad news, but I'm going to bet that the
tank should be replaced. I think it is very likely that the bottom of the
tank is severely coroded. This would be normal if the tank was not coated
inside.
Steve

"Marc Auslander" wrote in message
...
I have a 20 year old diesel tank that has a small leak at or near a
bottom weld.

I've been thinking of taking it to a heliarc welder to attempt a
repair.

Comments?