The good news is that Mercedes-Benz computers are far more reliable than they were just a few years back.
The Flexible Service System calculates in both miles and time, how long before you need to service the engines oil. Simply press the mileage button 2 times and you will see this displayed on the dash.
The new V8 & V6 motors are equipped with an oil quality sensor connected to the cars, computer system, as well as an oil level indicator. These two sensors as well as sensors from the cars CAN-BUS system feed additional data such as Speed, Engine and Coolant Temperature, Load Factor, RPM, and Engine Oil Temperature.
If you do an oil change yourself, you will need to reset the FSS, or Flexible Service System light. This cannot be reset with a scan tool, as those are designed for reading codes in the check engine light.
Additional factors, such as operating conditions, stop and go driving, high speed driving, cold starts, and oil usage are also calculated to determine the time/distance between oil changes. If your driving conditions are right, the system may even extend the 10,000 mile service intervals. However, oil is not that expensive, and we do not recommend attempting to drive that long on one batch of oil. You cannot damage the engine changing the oil too frequently, however, you can certainly burn out rings, seals, and bearing by not changing your oil regularly.
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