In march of this year, M-B released a bulletin, advising a one-time-only transmission fluid change @ 40 k miles.
This is to remove any particles that may have accumulated during break-in.
At the same time it is also advised to change the fluid on the 4-matic transfer case?
If anybody would like to read the bulletin ( it's all in german ), here it is:
http://www.motor-talk.de/t866242/f151/s/thread.html

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2007 C 230 Sport.

Actually,
the interval for the first change is 40,000kms. That's not 40,000 miles.

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John Shellenberg
1998 C230 "Black Betty" 240K

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See here:

Einführung des Getriebeölwechsels bei automatischen Getrieben 722.6 und 722.9, sowie beim Verteilergetriebe der 4MATIC-Typen 203/211/220 einmalig bei 60.000 km.

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2007 C 230 Sport.

Ahh. The part I "read" (no German, me) had a 40,000km notation.

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John Shellenberg
1998 C230 "Black Betty" 240K

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Come on...........with a name like yours there has to be some Kraut somewhere in your past.

The 40 k km part makes reference to the fact that most break-in wear occurs at that mileage.
Note also, there only suggesting a " one-time only " fluid & filter change.
The secondary purpose, according to the bulletin, is to improve shift quality.

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2007 C 230 Sport.

I passed the text through Babelfish translation website. Not the best translation but here it is:

"I found under search "oil change" Circular PW NR. 44/05 NFZ NR. 20/05 24.03.2005 to all Mercedes Benz partners Introduction of the transmission oil changing with automatic transmissions 722,6 and 722,9, as well as with the transfer case of the 4MATIC-Typen 203/211/220 uniquely with 60.000 km. Ladies and Gentlemen A substantial criterion for the customer satisfaction with automatic transmissions is the switching quality. This not only in the newer condition of the transmission, but constantly over the entire Lifecycle. After the introduction of the optimized lamella package in the transducer bypass clutch (increase of the number of grooves on 72 to 02/2004) to the long-term stabilization of the switching quality, as well as, the oil change represents a further step to the conversion of the NAG1 to the oil used with the NAG2 for switching quality optimization, in order to hold the switching quality also with high run achievements on a high level. In the oil stored particle is removed by the unique oil change, whose entry takes place to a large extent into the first 40'000 km and it can have impairments of the comfort of the switching quality why a unique (and not regular) oil change was specified. For this the again developed transmission oil ATF3353 (AO019894503) makes an additional contribution that we fill in automatic transmission 722,9 since serienanlauf, with these automatic transmissions from house. In the transfer case of the 4MATIC-Typen 203/211/220 the oil 001,989 2303 is used, in order to likewise hold the comfort self-shade of the 4MATIC-Systems high level with the change. Deviating of it a transmission oil changing with the oil FOX ATF 28 (AOO19894603), developed particularly for it, is to be accomplished starting from introduction with the transmission 722,8 (Autotronic, type 169) all 60,000 km. For vehicles with ASSYST the service position was already taken up to the maintenance extent. We will extend the service sheets by the note starting from FIN XXXXXXXXX, are evident starting from WIS update 03,05 the corrected service sheets. For vehicles with ASSYST plus is caused the service position to the service sheet automatically by the maintenance computer. The change of the data records necessary for it is only possible starting from data record release 09,2005."

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2012 ML350 Bluetec 4-matic
1999 E320 4-matic Estate


"A ship in harbour is safe, but thats not what ships are built for". - John A. Shedd

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