Hi, I am getting a warning on the dash read out where it normally displays the Kilometerage on my ML 320. The warning is "OIL HI" this flashes intermittantly every 10 - 15 minutes whilst driving. The car was due a service about 1000 Km ago and it will be serviced at the factory in the New Year when I return to Europe. I have check the oil and there is sufficient, so I was wondering if this is just a warning to remind me to get the car serviced. Hopefully somebody can tell me that this is normal and nothing to worry about, and that I can drive the car without a problem until it is serviced Thanks in advance for any help.