Originally Posted by atlantis
Should a new, original-style, third-party gas tank be coated inside prior to installation or not? It looks as if it might be zinc-coated but this doesn't mean anything, it was a cheap tank and a cheap coating might rust just as well. It sure will be painted on the outside but I'm not sure about the inside. Modern gas is also said to be more aggressive than it used to be.
Those who do recommend coating: What to use? Something that's meant for old tanks like POR15 or is there something else (maybe less costly) that can be used on a perfectly clean new tank?
KBS coatings makes a good fuel tank sealer. About US$65 + shipping.
I wouldn't use POR15 in a tank.