[header] How to seal a plastic gas tank [title] Drain the gasoline from the tank and allow it to dry. [step] Sand the area around the hole or crack, and clean the area with a shop cloth saturated with rubbing alcohol. [title] Mix the 2 part epoxy together and apply all around the perimeter of the opening.
[step] Cut a fiberglass patch large enough to cover the opening and overlap it. [title] Place the fiberglass patch over the hole and press into the epoxy.