Dear blueriomedina:

If your car is an old gasoline one and you have some oil leaks, try to use Valvoline Maxlife engine oil (SL spec) in your next engine oil change. I had some spectacular results with Maxlife on some old Japanese cars, so I think it's worth to try it on your MB gasoline car. It conditions seals and prevents leaks.

BTW, do not use Maxlife oil in a MB diesel car because it's not rated for diesel service.

Maxlife is not snakeoil. Its additive package is very good and includes well-known friction reducers such as zinc dithiophosphate and molybdenum compounds etc...

Eric