vividracing

The breaker bar method is the way to do it. Here's what's worked for me on really stubborn bolts.

Spray it with PB Blaster. Really soak it.
Run the engine until the exhaust is nice n hot. The PB Blaster will probably be smoking.
Use a large breaker bar, and lean onto it while giving it a bit of a jolting push. It might help to have a friend hold the head of the breaker bar to keep it from slipping.

Make sure you use a 6 point socket. 12 point will be more likely to strip it bolt.

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