R-Class (W251) Produced 2006-2013: R320CDI, R350, R420CDI, R500

Transfer case or differential?

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Old May 3, 2016 | 11:12 AM
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Transfer case or differential?

Ok first thanks for reading.

I have a 2008 r350 gas 4matic. I am coming up on another oil change. and plan on changing the differential fluid, or transfer case fluid. really just a question of which its called. I have seen videos on how to change it. I am going to buy it from MB but wanted to make sure I was asking about the right fluid.
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Old May 3, 2016 | 01:59 PM
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Originally Posted by Plutoe
Your terminology is somewhat off---your 4Matic has a transfer case that uses.5 liter of ATF fluid spec 236.12---------Your differential is a differential and uses 1.1 liter of 75W85 gear oil with a 235.7 spec!!
Ty, I kept seeing those terms being used for the same thing. The problem was me. I will try and look it up now with your info. The video I have seen was what I would have called a gear box. My mustang had 3.73 gears.

So which one is like what I thought? Thanks again.
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Old May 4, 2016 | 08:45 PM
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There is a front and rear differential and then a central transfer case. Fluids as Plutoe mentioned.
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Old May 25, 2016 | 02:57 PM
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MB told me I would need 3 quarts of each if I remove all the fluid.

Plutoe your numbers were .5 and 1.1. Marc, you said 2 differentials and one case.

Not sure how this all looks with the MB info. So my next question is @ Plutoe is the .5 and 1.1 for a DIY job and MB is talking a more complete removal?

If I have that right does that mean I only need 1 quart of transfer and say 2 of the differential or 3 to make sure I have enough?
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Old May 25, 2016 | 07:18 PM
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MB is often wrong.
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Old May 25, 2016 | 08:10 PM
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Originally Posted by marc hanna
MB is often wrong.
Thats the main reason I am posting. I didnt get a warm and fuzzy. He first said 3 quarts. I said total? Or each. He said each. He then said only one each if I just wanted to top them off, but 3 if I was changing it all. I started to debate it and felt I wasnt going to like any answers I got and would post here.

So from someone who has done it, how much of what did you use? Please be specific as to transfer case and for each diff. Thanks again.

I have ordered air filters (cabin, intake, oil) oil and will be doing that this weekend. Btw they still have the rebate for oil. I got 5 quarts mobile one european from amazon for 22.88 x2 and will be sending 2 $12 rebates in. So 33.86 for 10 quarts and I will have 4 quarts left over ( 2 from my last oil change) so half of the next oil change.
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Old May 25, 2016 | 10:32 PM
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Mine took less the a litre each in the front and rear diff. The transfer case uses transmission oil.
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Old May 25, 2016 | 10:39 PM
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So 1 liter for both front and rear or each. And I didnt ask what the fluid was just how much and how much I needed. So although it was transmission fluid in the transfer case how much did u use?
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Old May 25, 2016 | 10:43 PM
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Transfer case and transmission were done at the same time, so I don't know how much went into the transfer case. I'm guessing about a litre.
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Old May 25, 2016 | 11:17 PM
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I found this on Amsoil's site:
Differential, Front..........1.1 liters
Differential, Rear..........1.1 liters
Transfer Case, ..........0.5 laters

So for the diffs, if you are buying in quarts, you will definitely need to buy 3 total

Last edited by marc hanna; May 25, 2016 at 11:19 PM.
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