I need some ideas. The hold down bolt is seized. I've been soaking it with penetrating oil for the past few days, no dice.

Gracias.

 

Long breaker bar.

 

a little heat, or a little cold on the intake should help free it

 

A breaker bar was the first thing I tried. I'll try some heat and/or cold. Thanks much.

 

Also, don't be giving the breaker bar a long "pulllll". Doing that can induce a side-load that can strip the bolt head. You want to use a pulsing motion - like an air-powered impact wrench - to break the bolt free. Instead of a long pull, give a few short/hard pulls. Same for pushing. (Sounds like a dirty joke, eh?) That's why hammering on a ratchet handle or breaker bar works- it gives the bolt an "impact" which helps loosen it.

If you strike the breaker bar with a hammer, be careful of your eyes- the chrome can chip (chrome is hard but brittle) and little pieces can fly off into your eyes.