thanks for all your great feedback. i truly appreciate it. the condition of this tank is a genuine case of testing the capabilities of a sealant. i have used sealants in the past, but have deliberately quit using them when the tank's inner surface cannot be saved. having pinholes, this tank is the worst i have encountered. back in the day, i used kreem. imho, junk compared to the newer products. i have used caswell's on a couple of occasions, i find it very sensitive to narrow range of temperature in order for it to flow at an ideal working viscosity. i have used POR-15 on a number of occasions, but again never on this many pinholes and i do very much want to save this tank, as the original paint really is like nos. as far as removing gross rust, heavy rust, i like "wood bleach" or oxalic acid. it gives results so much better than the 3% phosphoric acid sol'n. i have used electrolysis in the past and it works really well, but is time consuming. as far as removing old tarry or dried gasoline i have discovered the generic type of zip strip paint remover makes SHORT work of old gas, so i remove the gas first, then remove the rust. since i have a POR kit, i've decided to go with that. after a night of oxalic acid, the inside of tank was beautiful white raw steel and 2 more pinholes revealed themselves. i have not ever used the mesh POR supplys with their kit, so this will be a new venture. will keep all posted. going to try to get my on to join so he can post. and try to figure out how to get this thread over to member builds.
