Originally Posted by BC_ZX3
"Intelligent Oil Life Monitor (IOLM)
What the IOLM measures to determine when an oil change is needed
Several key factors that affect oil life include:
Driving habits (such as towing and workload)
Hours in operation and at idle
Oil and coolant temperature
Engine speed and torque
Diesel particulate filter (DPF) cleaning cycles
How the IOLM works
The IOLM does not use oil quality sensors – it is entirely software-based and uses actual engine operating conditions to calculate the oil change interval by using an algorithm. This means the system must be reset after an oil change. Not doing so will result in a premature OIL CHANGE REQUIRED message."
Haha, good to know! Like I said, I wasn't entirely convinced, so it's good to have the exact information. You guys are awesome, thanks a lot!