Anyone ever use a product called Chassis Saver Rust Preventative Paint? It is supposedly like POR15 but a lot less money. http://www.magnetpaints.com/underbody.asp
I've heard of it but have no experience with it. I do know that POR-15 works. I've heard less than good about the other rust encapsulators like Eastwood's. Might be good to spend the extra bucks and get what works.
I got a sample today, from what I see so far it is no different from POR. The tech sheet has an great info. I'll let you know what I think, I'm gonna try it out later this afternoon.