Here's a couple of threads from a car forum I vist about using molasses as a rust stripper. Yes, molasses. The same stuff you put on your biscuits and corn bread or to make chewy cookies.

It works through the chelation process too, like Evapo-rust, just a lot slower. However, it's a lot cheaper and probably a little more controlable. Plus the stuff can be reused several times over.

http://www.forbbodiesonly.com/moparf...light=molasses

http://www.forbbodiesonly.com/moparf...light=molasses