Join Date: Dec 2005
Location: Upper Central Midwest
I think there is still a functioning PCV system on the LGZ engine. It's just low velocity compared to the previous standard way of doing it. If you look at the size of hoses and tubes in the earlier pictures I think GM engineers looked at how water vapors in the combustion process sometimes caused icing in cold winter climates. The ice could then block air flow in the PCV and build up pressure.
But, yes, now more contaminates possible in the oil. I guess I will get a used oil analysis sometime and see how that looks compared to our LFX Equinox 3.6L. Also, I usually change oil between 3,000 and 5,000 miles depending on the time of year. So I don't think there will be any excessive wear factor. But getting a UOA will tell the story.
2017 2WD Colorado LT V6 Luxury & Convenience Pkgs, Black/Ashen Gray Leather, Bullet Bedliner, ARE cap.