I asked the Service manager at my local Mercedes Dealer the same question.
He said it depends on you're driving. city stop and go, 10,000. short trips and long periods of none use, 10,000 to 15,000, long trips on highway, 15,000-20,000. lots of stop and go or sitting around for long periods unused (week or more) shortens the engines need for fresh oil, running at highway speeds lengthens it (its not the oil but how the engine pollutes the oil). Also don't go more than a year no matter the mileage.
He also said to drain the fuel / water separator filter every 3 or 4 thousand miles, don't wait for the idiot light.
I tend to take his advise since his service department has 49 bays and 2 shifts.
__________________
A devious mind is a terrible thing to waste.
|