Originally Posted By: TiredTrucker
As for the GM OLM being so good, and it probably is for most folks, I still haven't found the dust sensor that lets it know I operate my vehicles on several miles of dusty gravel roads every time they are used. Until GM installs sensors that account for every possible scenario that can happen and affect the oil life, I will stick with what I am doing. Their OLM is for the average general driver, of which that is the majority of owners. No problem. Not dissing it, just a realization that it does have its own limitations.
I run synthetic oil, a centrifuge, two bypass filters, and I do UOA.
I simply reset the OLM when it gets low, and it doesn't go down the second or third time any faster than it goes down the first time. I don't know how it measures, and I don't care, but it is quite useless to me.
OP do whatever lets you sleep at at night. This is how engines are made, circa 2013:
https://www.youtube.com/watch?v=wr4_B9EXWSo
Originally Posted By: Olas
Peer reviews and hard data mean nothing when I can get my warm & fuzzies by dumping the FF as soon as I get home, and again at 200, 500, 1000 & 5000 before I go to the recommended interval.