See also:

Headlamps fogged up on the inside
The headlamps may fog up on the inside if there is high atmospheric humidity. Drive with the headlamps switched on. The level of moisture diminishes, depending on the length of the journey and ...

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

Service messages
Information on the type of service and service intervals (see separate Service Booklet). You can obtain further information from an authorized Mercedes-Benz Center or at http://www.mbusa.com (US ...