GMCnewbee
Full Access Member
- Joined
- Feb 25, 2022
- Posts
- 528
- Reaction score
- 834
Our 2022 Denali has 23k right now. We are retired and do not drive as much as we used to. Last oil change at the Dealer was at 19k, 0W20 of course. I am waiting for my second letter so I can take it in and get the test. I looked at the oil last week and it looked great! I was surprised that it was still very "clear", almost no discoloration at all. I am hoping that is a good sign that my 6.2 is in the 95%. I have been noticing that at idle my RPM is very low, looks like less that 500 RPM! Vert smooth and very quiet. I doubt that any of my crank journals are running tight, or maybe that is just wishful thinking.
