I have replaced every filter on this car except the PCV valve. I cannot find it. The Haynes manual is very unclear in this area. The dealer has been no help, only to tell me they would charge me $175.00 to change it. It is not in the valve cover or itake as most are. I can buy it for $3.00, but do not think $172.00 is a good investment for labor. Thanks for any help you might give.