Originally Posted by 335stepitup
further the oil level/oil temp combo sensor also measures the density and conductivity(high metal content) of the engine oil thus enabling Condition Based Servicing.
So the car and sensors can actually tell when the oil starts break down and needs to be changed? That's what sets the oil change interval? If that's the case then why after an oil chage the oil change indicator does not change? I just had mine done the other day, car still states it needs an oil change in 5k miles.