As stated by ACM yes the brake fluid does circulate! Not very fast or much though. The reason for circulation is temperature diferences. The brakes are applied, the caliper gets hot, heat is transfered to fluid, fluid expands slightly due to higher temp. Fluid moves back through lines to resevoir somewhat. Over time yes all the fluid will be moved from the caliper back to the resevoir. But who the heck knows this time!!!! Personally the turkey baster way is the wrong way to do it. It is like draining the radiator and not the block of antifreeze and then saying you did a flush and fill! You will never quite get it all. And even over 4 weeks time you are not about to get all the brake fluid out. It just does not flow around and mix that fast. Best way is to empty the resevoir with a turkey baster, then fill with new clean fluid. Go to the farthest away caliper, normally right rear, then have wife or friend pump brakes and hold down, then open bleader until pedal hits floor, close and ket pedal go. Repeat til clear fluid comes out bleeder. Repeat on remaining three. You do not need to put a lot of preasure on the pedal since you are not trying to blast the fluid accross the room once the bleeder is open!

But I guess the pump out with baster and re-fill every week or month for a few weeks or months is better than nothing. May be half assed but it will be better than not doing anything at all to the brakes!

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~Jamie
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2003 Pewter C230K SC C1, C4, C5, C7, heated seats, CD Changer, and 6 Speed. ContiExtremes on the C7's.

1986 190E 2.3 Black, Auto, Mods to come soon.....