After I bought my TD, I put Mobil 1 ATF in. Then about 5 weeks later I get a copy of the Factory approved service products, and NOT ONE of the 12 ATFs listed was synthetic. Not even regular Mobil ATF was listed. Now, I haven't gone out and dumped the Mobil 1 out of my tranny, but it definetly made me think. Only some of the newest MB cars require synthetic ATF, and it's MB specific.
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