i used por 15 on a bike tank spent hours cleaning and drying it looked grate put it on the self got it down a year later the stuff had all come loose what a mess what i should have done was put gas in it and keep gas in it thats the trick it keeps the sealer working let your tank set empty with sealer in it and you will have a mess iv decided your money ahead just to buy a new tank no more sealing for me! but thats just me
