Kroil is the best bolt opener I have used. You do NOT want to break anything. I get mine at Napa.
http://www.kanolabs.com/
Some of the fittings are way in there and take forever to thread and unthread. Patience Luke.
If you do it on smooth concrete, all the oil that sprays out all over you and your hair can be used to slide around while working, not the most ideal situation but I always try to find a silver lining. I had to gojo my hair arms and torso in the shower. Wife was not please when I leaned on the wall by accident.
http://www.peachparts.com/shopforum/showthread.php?t=76673&highlight=rear
I bled off 1.5 liters of fluid until no more came out at the level bleeder. Came out like shaving foam. The damn thing still sprayed all over me.
Change your fluid after you are done -- not too difficult -- and a good time since most will already be out.
Notice weight of old and new accs -- my old ones were much heavier -- full of fluid.