B.O. Plenty wrote:
The computer in your vehicle has now way to sample the oil itself. Your comment about it monitoring the oil is not true. It can only monitor how the oil has been used in the engine referring to staring and driving cycles, engine temps during those cycles etc. It will then provide information as to when to change the oil based on that info.
B.O.
I beg to differ, the FSS (Flexible Service System actually uses a proprietary sensor setup that actually sense oil QUALITY as well as the driving duty the vehicle is doing to adjust when the oil should be changed.
From an article back 1998 (yes, more than 15 years ago) when the system was first introduced;
"The Flexible Service System, which is standard equipment on the new V-6, was developed by Mercedes-Benz and Shell Oil Co.'s Deutsche Shell of Hamburg, Germany.
Similar systems have appeared on other vehicles, but none has used a sensor precisely monitoring oil quality, says Fred Heiler, spokesman for Mercedes-Benz of North America Inc. The other systems have computed how quickly an oil change is needed based mainly on a person's driving style. An aggressive driver, for instance, would be notified sooner than a casual driver that an oil change is necessary."
Mercedes Flexible Service System Article.