Kroil products are meant for this.
Yes-Kroil. Heat the bolt up, spray with Kroil, while its smoking, spray the bolt with dust spray(the kind you use to clean computer keyboards.- tilt the can upside down when spraying) this will suck the Kroil in. Let sit 15/30 min. Repeat.
I’ve not had a brake/suspension bolt withstand this.
Impact wrench (battery operated). Drink a shot of whiskey.