POR-15 is a pain in the butt, it's $$$$$ and the directions have to be followed to the "T". That said, once on, it stays on and wont come off, (unless you use a stripper of some sort.) It STOPS and prevents rust and I love it. I even painted an inner fender with POR-15 and two years later and a zillion chuncks of stone and mud later, it still looks great. I don't mind taking the extra time to prep and paint with it because I know I wont have to do it again anytime soon. I live in the rust belt and anything I can do to prevent or stop the cancer is like money in the bank to me. /forums/images/graemlins/thumb.gif
I used a two part epoxy paint from "international paints" on a skidoo trailer that see's nothing but salt (about 92 or so)
(brand new , sand blasted , then paint)
It worked awsome
We used to have to wire wheel ,re-paint it every year , now we just look at it every summer , amazed it does'nt even get rock chips any more
I even thought o doing a trail rig with that stuff very tough /forums/images/graemlins/whistling.gif
I used a quart of POR-15 and a quart of Chassis Black. But I think I used some for my axles too. For both quarts you are into it for less than $100 for the paint but if you buy their prep products, it would run just over $100. Considering how hard the paint came out on my frame, it was well worth the time and effort to save myself the bucks that I would've spent on powdercoating. In fact, I overpainted the area that I was going to weld in my frame brace. I tried sanding, wire brushing, paint remover, but nothing made a dent in the paint. I finally had to take a grinder to the paint to get back to bare metal for the welding. I've wacked on the paint with a hammer and it doesn't phase it. However, I did follow the instructions to the letter, including prepping it by stripping all oils off of it with their Marine Clean, and then spraying it with their Metal Ready. I'm using it on my axles, front Crane High Clearance D60 diff cover, and I may use it on my bumpers as well.