Oil Change Warning Light

courtesy of Bob, The Auto Answer Man

I have seen couple cars that have a oil change light on the dash. Do you know how it works and is it reliable. Please let me know and any other information that I can read about it.
Robert Y.

As far as I know, they are nothing more than fancy trip meters. They simply count the miles since it was last reset and once it reaches a preset mileage interval, the light comes on. They do not sense any physical property of the oil (even though you think they should). Are they reliable? Sure, I bet they keep very accurate track of the accrued mileage.
Good Luck!
Drive Safely!
Bob, The Auto Answer Man

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