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Differential oil - need clarification

 
Old 04-20-2019, 10:05 PM
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2012 S350 Bluetec 4MATIC
Differential oil - need clarification

Hi guys I need to clarify which oil to use for 2011 ML350 4MATIC.
According to WIS, oil in transfer case should be 236.12 spec, rear differential should be 235.15 spec and front differential should be 235.74 spec.
I thought that oil in transfer case is the same oil as in transmission - 236.15 spec, and both front and rear differentials have same oil.
Can someone check WIS and confirm the specs for both differentials and transfer case? I would like to change the oil but I want to be sure I'll use the right one
Thanks
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Differential oil.pdf (52.8 KB, 7 views)

Last edited by artim808; 04-20-2019 at 10:20 PM.
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Old 04-20-2019, 10:49 PM
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2002 ML 320 & 2006 ML500
Here are the specific charts.
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Old 04-20-2019, 11:13 PM
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This is same chart I attached to my post. Is there any difference between 235.15 and 235.74? Both are 75W-85

Last edited by artim808; 04-21-2019 at 01:07 AM.
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Old 04-20-2019, 11:30 PM
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Originally Posted by artim808 View Post
This is same chart I attached to my post. Is there any difference between 235.15 and 235.75? Both are 75W-85
I didn't open your link.

Then check both sheets and compare manufacturers.

https://bevo.mercedes-benz.com/bevolisten/235.0_en.html
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Old 04-21-2019, 01:43 AM
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Ok so I searched more and since I don't have differential lock, both front and rear differential have same oil but different specs. Front differential has spec 235.74 and rear has 235.7 but oil is the same for both specs: A0019893303
Now according to the sheet I should have to use spec 236.12 for transfer case. I know that 236.14 spec replaced old 236.12 spec for ATF but I'm not sure if that's valid for transfer case as well.
It's confusing. In transmission I have 236.15 (blue ATF fluid) but for transfer case I have to use 236.12 (old red fluid)? If yes can I use newer version of red fluid 236.14?
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Old 04-21-2019, 05:55 AM
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artim, I don't own a diesel. I won't recommend any fluid in case something goes wrong. Why can't you just use what the charts say?

Or call a dealer and give them the last 8 digits of your vin # and ask them.
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Old 05-23-2019, 09:32 PM
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236.14 trans oil is perfectly ok to use in your transfer case.
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Old 05-24-2019, 09:07 PM
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I use the Fuchs 4134? in both - am pretty sure I looked it up on Fuchs website and that was there recommendations - in Australia had issues trying to get a good enough fluid for transmission
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