Haven't checked myself but I've been told the problem is a common one in the US diesels. One friend directed me to a Cummins diesel forum in Dodge pickups, but it didn't interest me.

Besides that car, which was mine at one time, and my 190D W201, I'm now in a GLK 350 Blue Tec with 40K miles, so I do have concern for the issue. Had this car since new and have never even had a minor warranty claim and no CEL issue. I'm considering the recommendations in this blog for use of the Red Line motorcycle oil. I was steered to Red Line at the factory in '82 where I picked up a W126 diesel. The factory rep at that time recommended use of Red Line diesel additive, advising it was the ONLY additive approved and used by M-B, which makes this oil recommendation more acceptable. Shops at that point had what they called "the Red Line treatment", which was to run Red Line throught injectors to clean them. Never did it myself and never had problems.

Still need to know about this shop!