[QUOTE=rspears;357756] The protective skids and rock bumpers on my Jeep have been perfect examples of this process, and are now coated with satin black Rustoleum which can be renewed easily as needed.
My impression, based on KS winters is that PC is a nice "fair weather" coating suitable for regions where the temperature rarely approaches freezing, where road chemicals are unheard of, and where sunny days are much more common than rainy days - i.e. SOCAL and the Gulf Coast states, and not much more. Am I off base? A victim of shoddy PC? QUOTE]

I don't think you're a victim. My experience has been about the same as yours. Here in So'eastern Mass. we get the triple H summers and lots of salt all winter long. PC just don't seem to hold up. And once rust starts under it, it spreads like wildfire! My .02 cents anyways!