Quote Originally Posted by Sabrewings View Post
It's not going to detect a problem like your air filter. It has no sensors or anything of that sort. It simply measures engine load, engine temps, RPMs, mileage, etc to determine when the oil should be changed. If your air filter is messed up that's your own fault.

It also assumes you're running dino oil so for synthetic users when it goes off you could most likely go longer. The OLM is no replacement for real analysis though.



To be fair, most professional racers do not use any off the shelf oils, including synthetic. Normal every day automotive oil is not intended for those conditions. So calling out one brand because it doesn't work properly in conditions it wasn't designed for is a little outside reason.
I never said it DIC used your airfilter for estimating how much time you have left on your oil. I used that as an example of why an oil analysis report is nice to have done, because I probably would not have caught that until I cleaned my air filter. I own a DHP powertuner and I can purposely mess around with the oil life system by throwing off my tune. GM just used the oil monitoring system for normal dino oil and never designed it for synthetic. Lets not also forget oil technology has changed in the last 12 years since my GTP came off the showroom floor.