I heard of a person that had a similar situation with rust in the tank and although I wouldn't do this myself because of the possibility of an explosion , he cleaned/flushed the tank VERY well to remove all traces of fuel or fumes and put a few boxes of 1/2" nuts in the tank, wrapped the tank in a quilt and put the whole thing in a clothes dryer just to tumble it for a few hours. It came out like a new tank and he lived to tell his story too.
Myself.....I wouldn't do this unless the clothes dryer was out in the back yard far from the house.
PS: if you get the tank free of rust, I would bypass the liner IMO.
Myself.....I wouldn't do this unless the clothes dryer was out in the back yard far from the house.
PS: if you get the tank free of rust, I would bypass the liner IMO.