Check oil?

Anyways i get a " check oil at next refueling " message up in the center but i check the oil levels and they're good. It shows this message once a day or once every two days.
Is this a warning or just automated , anyone have any clues

Thanks!
Last edited by E63w211; Sep 27, 2015 at 02:14 PM.
I have found the sensor to be rather precise. My 2007 E350 with 150K miles is now beginning to need some added between service intervals. When my warning comes up, I generally add about 1/2 quart (Mobil 1 European Car Formula) and that takes care of it. This particular car has been great on oil consumption, considering the mileage I have put on it.


