Per the MB "Factory Approved Products Service", Mobil ATF be it conventional or synthetic IS NOT listed as an approved ATF. With that said, I have it in my TD's tranny, but I did that before I got the list from Mercedes. When I read the list, it definetly raised an eyebrow with me. I was VERY surprised to not see Mobil/Mobil 1 listed. As a matter of fact, no synthetic ATF is listed.
1994 MB E320 Coupe (199,500 mi)
1992 MB 190E 2.6 (173,000 mi)
1983 Porsche 911SC (148,000 mi)
2004 Volvo V70 2.5T (198,000 mi)
President of CT/Westchester Section