I just want to say those bolts were such a pain in the ass when installing aftermarket headers for me. I sprayed some lube oil in it and it didn't work. Not enough room for my impact driver. My breaker bar barely fit and it didn't even move it.
So I used oil + torch. It was still a tough job. The nut was seized on there still so the whole stud came off.
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Clueless
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