Joe, We primarily only use vinyl-ester now on the tanks we provide unless requested otherwise. We have also used Jeffco Epoxy (now Rhino) with good results. We have had a test sample sitting in Fuel with alcohol for several years at Richard Shirley's with no deterioration. All my personal tanks have been built using the Jeffco. They also have a coating that can be painted on or sloshed during construction and is impervious to the alcohol. Lancair recommends using it during the construction of their tanks.
Steve Glover
