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      07-14-2013, 10:52 AM   #2
Major General

Drives: '97 332ti, '10 E92 M3
Join Date: May 2005
Location: Seattle

Posts: 8,443
iTrader: (2)

I use two for a flush, but furthest point during a flush (passenger rear) starts seeing new fluid after .75 liter. I use a full liter to that corner, then another liter for the remainder of the three corners.

Luckily, I used ATE Blue to find this out before swapping to Motul RBF 660, which is the same color as factory fluid (maybe a bit more yellow).