I recently bought a new to me 2021 GMC Canyon with the 3.6L LGZ with 21k miles. Even though the dealer did an oil change before I bought it the first thing I did when I brought it home was to do a fresh oil change since I had no idea what they put in there. I used M1 Extended Performance 5W-30 and a Fram Endurance filter.
I drive 80-90% highway on long trips, 45 miles each way to work. Generally no stop-and-go just continuous highway speeds, usually 65-75mph. I rarely do short trips and hardly ever approach full throttle. No towing and my average fuel economy has been about 24mpg, so I've been driving pretty conservative.
That said, I'm 2,500 miles into the fresh oil change and the OLM is down to about 67%. At this rate I'll hit 0% at 7,500 miles. I'm not complaining because I normally change my oil at 5k intervals, but I am just a bit surprised given how manufacturers like longer and longer OCI's.
So how exactly does the GM OLM work?
I drive 80-90% highway on long trips, 45 miles each way to work. Generally no stop-and-go just continuous highway speeds, usually 65-75mph. I rarely do short trips and hardly ever approach full throttle. No towing and my average fuel economy has been about 24mpg, so I've been driving pretty conservative.
That said, I'm 2,500 miles into the fresh oil change and the OLM is down to about 67%. At this rate I'll hit 0% at 7,500 miles. I'm not complaining because I normally change my oil at 5k intervals, but I am just a bit surprised given how manufacturers like longer and longer OCI's.
So how exactly does the GM OLM work?