I use the PB Blaster thread penetrant every time I remove bolts on the truck. Great product. Frees up just about anything you encounter. Even exhaust bolts. For the exhaust pieces I use the penetrant daily for a week or so before trying to remove the bolts. Never had any issues. Highly recommended.
For exhaust bolts I always try to use a high torque impact wrench. It makes it easier. I also use a manual impact wrench (one that you hit with a hammer to generate rotation) where an impact gun won't fit. This combination loosens up anything I have encountered on the truck.
For exhaust bolts I always try to use a high torque impact wrench. It makes it easier. I also use a manual impact wrench (one that you hit with a hammer to generate rotation) where an impact gun won't fit. This combination loosens up anything I have encountered on the truck.