If you do a search you will find many, many discussions on the subject. I would use Mobil 1 0w-40. You should be able to get a new owner's manual by calling 1 800 for mercedes

__________________
Ali Al-Chalabi

2001 CLK55
1999 Dodge Ram 2500 Cummins Diesel
2002 Harley-Davidson Fatboy
Merlin Extralight w/ Campy Record