I finally found the trick for getting seized bolts out without snapping them

For years I'd hit seized bolts with PB Blaster and a torch, but I kept snapping them off in the block. It cost me an extra 3 hours on a Ford F-150 last month in Dallas. A buddy told me to try heat cycling it first - get it warm, let it cool, then hit it with the penetrating oil while it's still hot. The expansion and contraction pulls the oil way deeper into the threads. I tried it on a rusted exhaust manifold bolt and it came loose with just a breaker bar, no snapped studs. Has anyone else found a method that works better than this?

2 comments

2 Comments

alice99120h ago

Heat cycling with Kroil works even better than PB Blaster.

the_jade11h ago

Can't believe you actually heat cycle with Kroil and live to tell the tale.