All the mechanics I talked to in Germany recommended it. The top W123 mechaninc at the dealer here, recommends it. I did it in my 220D for over 100,000 miles and never replaced anything in the injection system.

The dealer mechanic also discussed the mercedes information about not using the ATF. He pointed out that it seemed to apply to the newer diesels. Not the older W123's, W124, etc. Mercedes did come out with the study in the mid 90's. Prior to that everyone seemed to do it.

I do it.

Dave

PS and I also add a quart of ATF in the tank every once in a while.

__________________
1970 220D, owned 1980-1990
1980 240D, owned 1990-1992
1982 300TD, owned 1992-1993
1986 300SDL, owned 1993-2004
1999 E300, owned 1999-2003
1982 300TD, 213,880mi, owned since Nov 18, 1991- Aug 4, 2010 SOLD
1988 560SL, 100,000mi, owned since 1995
1965 Mustang Fastback Mileage Unknown(My sons)
1983 240D, 176,000mi (My daughers) owned since 2004
2007 Honda Accord EX-L I4 auto, the new daily driver
1985 300D 264,000mi Son's new daily driver.(sold)
2008 Hyundai Tiberon. Daughters new car