CURING POR 15

Ive used alot of POR 15. Only peeled once. a battery tray that somehow got some oil dripped on it between blasting and painting. I wiped it down with Brake cleaner, thought I had all residue off, nope. it peeled right off like a band aid directly where the residue had been. I re blasted and reapplied that POR, I had one HE11 of a time blasting anywhere the oil drip hadn't been
I have the K frame and whole suspension of my Volare done with it, several years and still like it was right after I put it on (well like it was after it dried) I don't have the car done yet, teh K frame is exposed to alot of moisture, it's in the entrance to my crawlspace and has been for at least 5 years. I'd use it again..... the rest of teh front suspension and other parts I coated are in the attic.... I've used it on the bottoms of mower decks, the stuff flat out WORKS!