My father in laws is 2 years older then mine and drives even less then me. His hasn’t had an oil change in about 2 years and it says like 40% oil
Life left.
Weird. My 05 Silverado at 4200 miles is down to 1.6% oil life left and it's been 4 months. Cold winter temps and idle time/short trips but also lots of longer trips. I work all over the place within like 40 minutes drive of our city.