Ethanol and Tern Finish inside Gas Tank

[Greg Jones]

Recently there was a post involving ethanol and its affects on Model A gas systems, and one expert stated that ethanol would indeed attack a tern finish. Now if I remember correctly the Model A gas tank was tern finished internally. So if I had, say, a NOS gas tank I could deduce that I should coat it internally before using it, to protect the finish. Is that correct?