What Mobsta's talking about is a technique called "reverse bleeding". Since going to 4 piston calipers, I do this all the time. It really cuts down on your time replacing brake fluid or rebuilding your brakes, or if you suspect an air bubble- when it comes time to bleed them. It's easier to do with rear brakes but is very effective for front ones too. Basically, it goes like this:
Fill the reservoir, and use a standard slow caliper bleeder screw loosening until you get a few drips then tighten the bleeder screw again.
Now take the clean oil can with DOT 5 in it and a plastic tube pressed on the nozzle of the can and connect the other end of the tube to the end of the bleeder. Loosen the bleeder screw again and press the can to feed the fluid UPWARDS until the reservoir is full, maybe (being careful to use tape and/or rags not to let it drip onto the paint) until it spills over the edge of the reservoir just a leetle bit, then cap the reservoir (a little more will spill when you put the reservoir cover on so be careful not to let the fluid contact the paint brake fluid will damage the paint). The end result is you won't have to bleed the brakes! By "reverse bleeding", no air will be in the system. The bubbles will go up with the fluid and pop at the top of the reservoir fluid level.
Here's another bit I'll add. Instead of an oil can, I use a plastic baby medicine syringe. They only hold about 2 or 3 teaspoons but that's all you should need. They're about a buck and a half each, and if you get decent ones and you wash them out quick they're reusable. Google "baby oral syringe" you'll get a bunch of hits... you'll find them at any decent drug store.
Once you get used to doing this you might be surprised how much time you save when bleeding brakes.
This might be on the "how to" posts already, I didn't look. Good luck all- c'ya out there soon!
Peace, Respect,
OHM
