Sorry I didn't make myself clear.

I know exactly what PCV and CCV mean. But that was not my question.

I am ONLY interested in long-term report: after some 5000-10,000 miles AFTER doing this mod by BavarianE39, what is the oil consumption BEFORE and AFTER the mod. If people can post the following info, it'd be great:

- Year/Model/Trans/Mileage (example: 2006 X5 M54 6spMT with 122K miles).

- Oil consumption BEFORE mod = _________

- Oil consumption AFTER mod = _________

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1998 E39 528i 5sp MT
2006 E53 X5 3.0 6sp MT