Hey all, looking for advice on oil for my 2011 Sierra with the 5.3L V8. I have just over 60K miles on the odometer. It does mostly 6 mile one way side street commutes to work. So about 4K miles per year. No towing or hauling. In the summer I ride, so it sees less time on the road. When I do drive it, my driving style is, um, spirited, so to speak. I had been doing annual oil changes using M1 5W30 per specs, but my UOA came back showing slightly high aluminum, iron, and copper levels. Viscosity was low (8.69), flashpoint was low (355), and fuel dilution was 1%.
As much as I hate to admit it, I'm getting to the point where it is hard to climb under and wrench on my vehicles. The days of grabbing a jug and filter at Wal-Mart are almost gone. I'll be taking them to have someone else change the oil.
What is a decent oil, that is readily available, and should I go to twice a year OCI, or stay with annual? Winters in eastern WA are fairly cold (single digits to below zero) and summers are hot. To me, 60K is not considered high mileage, but is it time to switch to a HM oil? I have zero leaks, and zero consumption, by the way.
Thanks in advance for your input.
As much as I hate to admit it, I'm getting to the point where it is hard to climb under and wrench on my vehicles. The days of grabbing a jug and filter at Wal-Mart are almost gone. I'll be taking them to have someone else change the oil.
Thanks in advance for your input.