Zep has this 1 gallong auto parts cleaner. I gal will make 5 just add water. This is the strongest stuff Ive seen and it is Bio, Wear glves it will eat yer skin up and clea partsbest ive seen. It's like $15 a gallon at Home depote.
Clueman: I'd like to find out more about this stuff. Zep is a real old name in the auto trades, so it might be real good??
What have you tried to clean with it; like real old caked on stuff??
I need to change mine real soon.