Quote:
Originally Posted by bcredliner
The oil separator is the CCV system.
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The following is the CCV system for a 4.4:
RealOEM.com * BMW E53 X5 4.4i Crankcase-Ventilation/oil separator
The oil separator and the CCV are terms that tend to be used interchangeably. The CCV valve is attached to the oil separator depending on the design of the engine.