Cool, I think I will run 10W after my next change. And regarding my PCV. The one in there is "new", only about 1200 miles on it since my last change. So far, I have used three different PCV brands, and I think I like the Purolator PV1061 the best. It fits the best and my oil consumption running with it was the least.

The oil problem is strange. Its like the truck is fine, fine, fine, then BAM! all the oil is gone.



Bart


Quote Originally Posted by Joe_Black
In the owner's manual you'll find acceptable grades of oil for various conditions, but as a general rule you should be fine with a Mobil-1 10W multi-grade. Check out your PCV valve as it could be faulty (even if new) or blocked. Bad PCV valves are the number one cause of excessive oil consumption.