Differential fluid for 2011 E350 4matic - Page 2

04-28-2024 | 11:15 PM

#26

Quint22

Super Member

Joined: Jun 2022

Posts: 673

Likes: 304

From: WA State, USA

2014 Cummins, 2014 E250 Bluetec

Quote:

Originally Posted by CaliBenzDriver

These nightmare plugs are not standard nuts and bolts.

The diff plug unlike engine drain plug is sealed with its clever shape: IT IS CONICAL, no crush-washer, hollow head.

So FYI the front diff is not conical like usual ones. It is same/similar as transmission and has a crush washer.

Quote:

Originally Posted by CaliBenzDriver

Fumoto makes fine products. I used to have one 20 years ago on my oil pan. It's super convenient

However the diff plugs are low and very exposed to hazardous road projections.
Do they have a valve that is flush ?

With a magnetic plug 40kMi schedule is ultra conservative... no need frequent access, right?

The fumoto I got will not work as you mentioned not enough clearance. I did get one of the oil drain magnetic plugs however the washer and plug are slightly larger then the flat spot machined into the front diff. Gonna look for another washer to fit correctly or grind down the one that came with it.

Overall changing the front diff fluid is pretty darn easy once your are in the area. Mine looked really dark and definitely needed it. Hopefully I can get the magnetic plug to work correctly as I think it really needs it. Just about every diff I have changed fluid on has had one, not sure why they wouldnt do it on these.

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