as long as it conforms to MB specs 229.3 or 229.5 what does it matter what make it is..all information gained from the search section of the forum...

MB 229.5 - Multigrade engine oils (Specification 229.5) - Mercedes-Benz Specifications for Operating Fluids

yes muskrat your right 8.5 us quarts is about 8 litres still a cheap oilchange at £65..although why they would use american fluid measurements in a european built engine that is also used in the slk320 that was around long before the crossfire seems strange...