Used to fight with rusted exhaust bolts for hours until I learned about the heat-and-wax trick

Back in 2019 at a shop in Missoula, an old-timer showed me to heat the bolt cherry red then drip candle wax on it before wrenching, and now those same seized bolts come out in under 5 minutes, so has anyone else found a weird trick that totally changed how you handle rust?

2 comments

2 Comments

rayc8920d ago

Hit the bolt with some PB Blaster a few hours before and let it soak in deep. That plus a quick torch blast usually frees up stuff that's been frozen for years. Kroil works even better than PB if you can find it.

davidwright20d ago

Tried that exact combo on my F-150's leaf spring bolts last fall. Soaked em in PB for a solid 6 hours, then hit em with the torch for about 30 seconds each. Cracked em loose with a breaker bar no problem. Thought I was gonna have to drill em out but nope. Kroil is definitely better but hard to find around here.