I just read through all the pages on this thread and it made me think of a cleaner degreaser I used years ago called SLAM its not the same as another cleaner out there called grandslam. anyways this stuff worked great spray it on and hose it off and if you let it set for a bit it would take most heavy grease off so I started looking for it and found it its made by a comany in stockton ca
http://www.goestores.com/storename/p...care/home.aspx
they make a lot of cleaning and detailing supplys if you click on cleaners you'll find it and it isnt cheep but you delute it with water 5 gallons lasted me for about 3yrs and I wash and detail a lot of cars and I used it to clean alot of other stuff