I did a test a while back with a stuck engine by using different types of lubricants. I posted teh results in the stovebolt pages somewhere.
What I found and will swear by today is KROIL. I also used it on my IRWIPI trip and that really made a believer out of me. Many people on this forum will swear by it too.
When I got home from the trip, I bought a case of it. Here is the web page for KROIL.
http://www.kanolabs.com/ KROIL...KROIL...KROIL....KROIL....KROIL...KROIL
