Just finished a long trip to see family in another part of the country. After about 3600 miles of interstate driving, the Suburban 5.3 OLM has me on pace for an oil change at 12,000k miles. That's a huge number to me, and I expect it to drop off pretty quickly now that I'm back to my 20-mile-a-day in-town commute. I'll probably change at the end of the summer, which will be around 7K miles on this Mobil1 0W-30.
But I wonder if someone regularly travels a lot and uses only dino oil, would their engine be okay with following a 12k mile OCI? I know the 5.3s have a reputation for being easy on oil, but that's a big number. Or, is this is a flaw in the OLM system that needs to be overridden by a thinking human?
But I wonder if someone regularly travels a lot and uses only dino oil, would their engine be okay with following a 12k mile OCI? I know the 5.3s have a reputation for being easy on oil, but that's a big number. Or, is this is a flaw in the OLM system that needs to be overridden by a thinking human?