Even though I soaked for 3 days the 4 bolts for the Y pipe with PB Blaster, one of them broke during removal. I tried using a left handed drill bit to remove it, but it didn't budge. Tried an extractor tool, but still nothing, and don't want the extractor to break in there.
After reading online, I learned about using Nitric Acid to remove the bolt. Has anyone tried this? Any experiences they could share?
Thanks!