[Captkaos]

I never had good luck with those vacuum bleeder ( call me old, old-fashion, whatever) but I would rather push the nasty old brake fluid out into a bottle of brake fluid so I can see the bubbles and put fresh fluid back in. It has always been a 2 person operation for me.

BTW, if you have old brake fluid, you might want to chunk it. Over time (even in a bottle) is will absorb moisture and go bad. Which is another reason for replacing brake fluid after a while.

Locked calipers most of the time are from a collapsed rubber hose. It could be rusty and sticking though. Mushy or no pedal is a symptom of air in the line.