I had a 2003 Taurus and the PCV valve was on the rear bank valve cover in plain sight. I now have a 2007 Taurus with the same Vulcan 3.0 but I can't figure out where the PCV valve even is; it's definitely not in the same spot. To add to that Advance doesn't sell them and AutoZone says they are special order. I'm about to turn over 90k and was thinking about getting a new one just as preventive maintenance, the old one seems to be fine. So I have two questions: where is it and should I bother if it's not causing me any trouble.
1994 BMW 530i/5spd - M1 0w40