To imply that an oil life monitor that does not measure any intrinsic property of the oil such as viscosity,TBN, contamination levels, etc is better than a spectrographic analysis really makes no sense at all. As anyone who flys a private plane and has their lube oil tested on a regular basis. Would they trust the GM oil life monitor in that application - I think not!
The GM system doesn't take into account if the engine is even tuned up and running well. This has a significant effect on oil change intervals, as can variations in fuel quality.
Ted
The GM system doesn't take into account if the engine is even tuned up and running well. This has a significant effect on oil change intervals, as can variations in fuel quality.
Ted
