No heat the bolt/nut or I do bleaders on brakes that are old. Get it hot with a propane torch. then put a birthday candle works the best on it to melt in the way on the hot bolt. it creeps in and lubricates the treads. Will break free then. A old school machinist showed me it in the 80's. Seriously works. Never had a bleader I could not break loose, and they suck!