Originally Posted By: oldmaninsc
Originally Posted By: WobblyElvis
In my opinion the OLM is very conservative.
I agree. The owners manual for my Impala states to change the oil within 600 miles once you get the change oil message. I usually try to take it down to almost zero, but a lot depends on what is happening in my life at the time.
I'm always amused with people that think the OLM is just a toy. I guess GM engineers are smart enough to design the car, the brakes, the various safety systems, but not smart enough to design a computer algorithm to tell you when to change the oil? LOL!
GM engineers did not engineer into the calculations the use of bypass filtration, synthetic oil, or test lab analysis. I'm using all the above and I ignore the OLM. Which do you think "GM engineers" would give precedence to, test lab analysis or their own OLM?
Amazon sells a patented product to check the condition of your oil:
http://www.amazon.com/Lubricheck-Motor-O...ords=oil+tester I bought one; at the very bottom of the instructions, if you question results, it refers you to a testing lab.
Yes, the OLM is programmed to be conservative, but it is NOT intended to take precedence over lab analysis.