Jared L. suggests:
Have a stuck or rusty bolt but you just ran out of penetrating oil? A great cheap alternative is to use a 1:1 mix of ATF and acetone.
Stacey adds: Very interesting! I'll need to try this one!
Stacey is on the road this week, traveling all the way out to DuBois, Wyoming to sit down with Dan Starks, the founder of the National Museum of Military Vehicles.