Yeh, looks like they have a bit of work to do yet. I don't really understand the diagram, is the large chamber the cyclone? then the sludge drains into the oil filter housing,which feeds the bearings directly on the next restart? They say secondary seperator but I don't really see any seperator?? Are they counting the regulator housing as the first seperator and the collection chamber as the second? I can see how servicing would be easier though.

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1988 325is (purchased new) sold
2004 X5 3.0 2005 X3 2.5
2008 X5 3.0 (new to me)