"Tricks to remove old exhaust bolts?"

wow last i knew they only sold it to the industry. been a while since since i was on the road working in the boilers though...good now i can stock up ...R)

 

This. Worked well on mine. Patience is the key, as is a light hand when it comes to trying to turn them loose.

 

Whoopie!!!!
After repeated soakings with cb blaster for three days, the nuts were
still locked. Tried the torch, still locked...A friend brought some
GM heat valve and rust destroyer by. Gave it one application, waited
15 hrs and they came off with one hand. Nothing broke or fire damaged.
Thanks for all the advise from you guys..R)R)R)
R)R)R):stout::stout::stout:

 

what is this miracle solvent you have come apon do tell do tell

 

Go to your GM dealer to get this:[parts dept.]

Vehicle Care
GM Rust Penetrate & Inhibitor& Heat Valve Lubricant.
1#88862627
I think its about 8.5 oz spray can