spray pb blaster around it and be wasteful more the better let it sit for a minute or 2 then get a small pipe wrench if it is now stripped or what ever tool works same happened to me with break line bolt on a 89 bronco

dont know... depending on the nut diameter, drill parallel holes through the nut horizontally (but not the screw) then insert metal objects through and twist with the metal objects... never tried..

Air hammer. Works every time.

Stiltons, spray it first with penetrating fluid, wait a while and try, boyfriends idea.

You should have used a tubing wrench

I'm trying to replace a broken power steering hose on my 97 dodge dakota. However, one of the nuts on the hose is so rusted that the wrench can't grip the nut. I've tried vice-grips too (my last ditch effort) but those didn't work either. Any suggestions how I can get it loose?