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Thanks for the replies. While i'm positive that mobil 1 (in any grade) is NOT an acceptable diesel oil, I wasn't aware that its not approved for MB gassers....? Almost ALL of the dealerships use mobil1 for their oil changes.
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Mobil 1 15W-50 meets MB spec 229.1 and 0W-40 meets 229.1 and 229.3. 0W-30, 5W-30, and 10W-30 do not meet MB specs. So it depends on which Mobil 1.


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PS Loudapache - an oil analysis at 5000 miles is relatively worthless, as the oil supplied from the factory varies, as well as the high level of wear metals present from break-in.
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This is an analysis with 5000 miles on the oil not the engine. The engine has 10kmi on it so the owner must have changed out the factory oil at the 5kmi mark to Rotellat T 5W-40.
http://forums.tdiclub.com/NonCGI/ultimatebb.php?ubb=get_topic;f=5;t=004276