I "think" the early oil change reminders in the Commander were simply mileage based, that is why you could adjust it.
Later Commanders it is usage based, and based off using the recommended conventional oil. My 2010 reminder seems to go off a little earlier if I'm making a lot of short trips, and later if I've made longer trips. Its usually close to the recommended oil change period, but it varies.
Short trips will need oil changed at lower mileage, than long trips. If you're making lots of short trips less than the vehicle has time to fully warm up to operating temperature, you should consider that severe duty and use the severe duty schedule.
The PCM (which tracks and sets the light) has no idea what oil you put in the vehicle and if the oil can go much longer than conventional, that it is assuming you're putting in. So your forced to ignore OR reset it, or I recommend, it it works out, reset it every other time and change the oil every other time.
The later Commander's, you can only reset the reminder after it has actually gone off, doing the procedure before it goes off does nothing to reset it. Once you have the reminder, turn the ignition key to on (don't start the motor) and press the gas pedal fully and smoothly down 3 times (Full stroke, let it all the way in between as well) within 10 seconds. You should a message on the EVIC sating the oil change reminder has been reset.
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