Fuel tank sealer

[jjwithers]

I use POR 15 often and it works OK. On one tank, 13 years later (40k miles later), a few pieces flaked off inside the tank.
Another tank is amazing , and I've seen it bubble inside another tank..
Caswell - I had a tank that had a small leak in it and that stuff sealed all the leaks, and worked fantastic. It's been 2 years on that tank and everything is A-OK.