i don't want to argue...you can read for yourself
[ame="http://en.wikipedia.org/wiki/Crankcase_ventilation_system"]Crankcase ventilation system - Wikipedia, the free encyclopedia[/ame]
[ame="http://www.amazon.com/GENUINE-SUBARU-PCV-VALVE-11810AA130/dp/B00BC4VWO6"]Amazon.com: GENUINE SUBARU PCV VALVE - 11810AA130: Automotive[/ame]
any disputes should be taken up with Amazon and Wikipedia respectively
