POR-15 is a Rust converter. I personally am going to try out Eastwood's version as it has gotten better reviews on a head to head comparison. Its called Rust Encapsulator. I'm hoping to hit the frame with it and anything exposed and call it good. Wish I could spray it on, but I'd be afraid to get it on the body by accident ;-) Here's a link: http://eastwood.com/jump.jsp?itemType=CATEGORY&itemID=372 MJ