I say Mobil 1 too. All of the main MB dealers that I have seen use Mobil 1. They all have signs up reccomending Mobil 1. Also, all of the MBs me and my dad have owned have always been serviced with Mobil 1.
Mobil 1 is cool!!!
---My Previous MBs---
87 300SE (Sold) - Black, Cream Leather
89 300SE (Sold and missed) - Black, Cream Leather
87 420SEL (Died!) - Bronze, Black Leather
---Father's Previous MB's---
2004 S320 CDi - Black, Cream Leather, 18" AMGs
2001 CL500 (Stolen!) - Black, Cream Leather
1999 E55 AMG - Black, Black Leather
1994 500SE - Black, Cream Leather
1990 300SE - Midnight Blue, Cream Leather
1986 420SEL - Diamond Blue, Cream Leather