I was reading a few threads here on RCU about devarnishing engine parts. There were a lot of references to using antifreeze in an old crock pot. It seemed to me a crock pot is a bit more than I need for my smaller engines. It just so happened that my mom was getting rid of an old 4 cup coffee maker, so I volunteered to get rid of it for her. I put the disassembled engine parts in the pot and added enough antifreeze to cover the parts, turned it on and let it sit a couple days. Surprisingly it works, I can see bits of varnish floating around, and the parts look pretty darn clean. The best thing is I didn't have to use a whole lot of antifreeze to do it.