First of all, wash all of that penetrating oil off with brakes parts cleaner. The slightest hint of petroleum product in brake fluid will contaminate the entire system. That is a real expensive repair. You can grab the bleeder screw with a vise grip pliers. Use a hammer to bang on the caliper right next to the bleeder screw. That will distort the casting and help break the bond in the threads. If you have an acetylene torch, heat the bleeder screw until it gets red hot, bang on the casting, then dribble a little water on the screw to quickly shrink it. Try to keep the water off the casting as much as possible. Don't try this with a propane torch. The flame is not nearly hot enough, and with a prolonged attempt to get it hot enough, the rubber square-cut seal inside can be damaged.
As a last resort, just unbolt the caliper, hold it with the hose connection at the highest point, and loosen the hose. The fluid will gravity-bleed through that connection. You may need to loosen the cap on the reservoir so no vacuum builds up in it. That will prevent the fluid from running down.
Sunday, February 2nd, 2014 AT 8:53 PM