I use water based polyurethane for the firewall exterior and the fuel tank area's interior. Easy clean up, no stink and it is fuel proof enough for me. Just slather it on, spread it around to thin it a bit and then wait a day or two and do it all over again. Done. No hurry because of the time limit with epoxy, no ruined shirts or pants and no additional exposure to epoxy which will eventually sensitize you to it and make it impossible to use unless you like visiting the hospital's emergency room. This applies to everyone. Everyone has a limit to how much epoxy that they can use in their life time. Why use it up on non structural construction chores? Ditto CA.


Ed Cregger