San, I don't think it's mileage based at all, but rather is entirely dependent on the oil level detected by the sensor.
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Ok, so when do I check for the oil level? Immediately after I turn the engine off? Or a minute or two after turning the engine off? Or when the engine is cold?
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What he said (needless to say....he's Dane, after all!) You want the oil to be hot, or at least warm, then give it enough time to drain completely back into the pan before checking. Now aren't you glad you have a dipstick instead of having to rely on a sensor that may or may not be working? :thumbup
I usually wait for the car to stall. Is that bad?