I'm looking for reccomendations on which gas tank sealer seems to work the best with the 10% alcohol gas that is forced upon us. I just took the tank from my 1950 Chevy in to have it dipped to clean all the rust out of the inside. After I paint the outside I want to coat the inside with a sealer to prevent the rust from startng over again. I was planning to have the tank powder coated but I see a solder joint around the smaller tube that must vent the tank that would never stand up to the 400 degree temps that powder paint is baked at.