With this car, the issue is not so much the brand but the type. Mobil 1 TDT just happens to be available and affordable and meet the engine requirements. There's a spec. much like the VW TDI that must be followed if you're using the FSS. If you want to run regular 3-5k oil changes, then it's your choice of diesel rated oil.

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-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250