I just bought a gallon of ppg industrial enamel, sprayed great , no reducer needed and it was only sixty bucks. It took about 1/8 of a gallon.
Could you purchase it in a quart?
I'm using Imron on mine. I takes a long time to cure but it's tough as woodpecker lips.
lips or beaks? ;D
I must be the only one that finds POR-15 to be crap! Trust me when I tell you it does not hold up to Cat piss or Brake fluid. I did the underside of my tub and the wheel wells, engine compartment and axles with Black Epoxy primer and that by far has been the best I've used. I also used it on the inside of the tub before I sprayed in the liner, wish I would have done the rest of the stuff I POR-15 with Epoxy instead.