See also:

Additives
Do not use any additives in the engine oil. This could damage the engine. ...

Please bear the following in mind
At the onset of winter, have your vehicle winterproofed at a qualified specialist workshop, e.g. at an authorized Mercedes- Benz Center. Observe the notes in the "Changing a wheel" ...

Vehicle level
Your vehicle automatically adjusts its ride height to improve driving safety and reduce fuel consumption. Depending on the vehicle height that has been set, the vehicle automatically adjusts it ...