Quote Originally Posted by Sabrewings View Post
Incorrect. GM spent millions of dollars developing the oil life monitor. Lots of oil analysis done examining factors like engine load, engine temp, operating time, mileage, etc. It's quite accurate. I had my analysis done on some dino oil when the oil life monitor said about 10%, and the analysis agreed. It can be trusted.
ive heard different but your a pretty knowledgeable guy so i guess i stand corrected