What I have done for years on my cars is to run them till they get to
operating temp and use a 6 point socket to loosen the nuts a couple of turns. It
can get hot and realy easy to burn your self but this is the quickest and
easyest way. IMO. If the stud comes out it needed replacing anyway because it is
corroded to badly for the nut to come off on the threads.

I never had a problem getting a nut/stud out. The main thing is to use a 6
point socket that fits well and heat!!

Jim Morgan 86GL "breadbox" 215,000.0