Hunter,
Checkout my experience with Bill Hirsh sealer - not so good. I am sticking with ethanol free gas even though I didn't seal my gas tank with anything in the phaeton. I had TankRENU do the coupe and who knows what they used to seal it. Ethanol free gas is still available here in Lakeville, MN at 30 cent more per gallon - how long will it last, who knows. It is worth it.
http://www.fordbarn.com/forum/showth...ht=Bill+Hirsch