S-Class (W221) 2007-2013: S 320 CDI, S 350, S 450, S 500, S 550, S 420 CDI, S 600

Transfer case fluid

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Old 03-21-2015, 06:49 PM
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2007 s550 4matic
Transfer case fluid

Does the transfer case of a 4Matic use the fluid of the transmission or it has it own fluid. I want to change the fluid but want to make sure.
Old 03-22-2015, 01:00 PM
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2015 s550v4
Is the transfer case fluid change a recommended service? I've not seen it, but would make sense.... would not be same fluid BTW.

Last edited by new550; 03-22-2015 at 01:02 PM. Reason: added to post
Old 03-22-2015, 01:53 PM
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2009 S550 AMG sport pckg. 2014 Ford F-150 Lariat Supercrewcab
The transfer case in the 4matic feeds from the tranny in our 722.9 so need to do transfer case fluid. I had an ml350 with the other style transfer case that had its own fluid which was just mercedes tranny fluid
Old 03-22-2015, 01:54 PM
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2009 S550 AMG sport pckg. 2014 Ford F-150 Lariat Supercrewcab
The s550's have 722.96 i believe
Old 03-22-2015, 02:35 PM
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2007 s550 4matic
Originally Posted by Nickthegreek
The transfer case in the 4matic feeds from the tranny in our 722.9 so need to do transfer case fluid. I had an ml350 with the other style transfer case that had its own fluid which was just mercedes tranny fluid
Should it be "no need" instead of "so need"?
Yes, S550 has 722.96 tranny.
Old 03-22-2015, 04:21 PM
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Woops yeah no need lol. It just feeds right off the transmission

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