Usually the tank is cleaned of all loose rust and that gas tank sealer is poured in just sloshed around in the tank, the excess poured out and then it is allowed to dry for a couple of days. I don't know what you mean by "bake" as tank sealer doesn't take to heat very well. Perhaps a low drying heat but a heat to bake it doesn't sound right.
I believe that tank sealer will work but with all of the gasoline additives used these days (including alcohol) , the question is how long it will it last?
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