[Jim Sims]

Brake fluid doesn't circulate much; recall how small in diameter the ID of the "hard' brake lines are. However, when one installs new full thickness pads and pushes the caliper pistons back, fluid is pushed back to the MC reservoir and if one has been adding fluid or if all the pistons are pushed back at once to make clearance for pad installation the reservoir can overflow; is the overflow hose connected? The time to exchange the most fluid using the "baster method" is after installing new brake pads. I do not recommend this except as a measure to remove as much of the old fluid as possible (to avoid pushing it all the way through the system to the caliper bleed screws) before adding new fluid for a proper fluid exchange/bleed. To truly get the new, clean brake fluid to the calipers the system has to be bled. Cheers, Jim