Gear Oils
Thread Starter
Senior Member
Joined: Jul 2007
Posts: 319
Likes: 16
From: Vancouver, BC
2015 S550V
Gear Oils
Hi Guys i just changed my transmission fluid and filters at the dealership, i also want to change out the front and rear differential fluids, does anyone know if this is a DIY job, also i read somewhere the oil for the transfer case is the same as the transmission fluid.
Any info appreciated
Any info appreciated
Last edited by 604benz; Dec 10, 2021 at 12:22 PM.
Senior Member
Joined: Jan 2019
Posts: 497
Likes: 196
From: Palm Beach, Fl
2016 S550 sport, 2018 GLC300, M3, Zo7, 2021 Sierra Denali
I dont have a 4matic and cant tell you about that fluid. I have a 2016 S550 2wd and the rear diff fluid is super easy. Just get the MB spec fluid, there is a fill and drain, no crush washers or seals. I did it at 30K and fluid was like new for reference.
MBWorld Fanatic!
Joined: Aug 2017
Posts: 1,697
Likes: 522
2019 S560, 2015 Honda Civic Hybrid
Small tip on diff fluid change ... take the fill plug out first, then the drain plug. If the fill plug is seized for some reason and won't come out you'll be glad you didn't drain all the lube first!
Out Of Control!!
Joined: Sep 2018
Posts: 14,693
Likes: 4,584
From: unbegrenzt
2017 GLE350 4MATIC
Hi Guys i just changed my transmission fluid and filters at the dealership, i also want to change out the front and rear differential fluids, does anyone know if this is a DIY job, also i read somewhere the oil for the transfer case is the same as the transmission fluid.
Any info appreciated
Any info appreciated
Member
Joined: Dec 2009
Posts: 115
Likes: 13
From: Maryland
S550 4-matic
Front Diff
I’ve changed my rear diff fluid today with no problems. Got to the front and couldn’t find the fill or drain plugs on the front diff. I took the cover off, I see the stirring rack, oil pan and all but no idea on the two plugs. Anyone have a diagram of the front diff?
Out Of Control!!
Joined: Sep 2018
Posts: 14,693
Likes: 4,584
From: unbegrenzt
2017 GLE350 4MATIC
Drain plug is at the bottom. The fill is via a halfshaft (axle shaft) opening, therefore a halfshaft needs to be removed. There is no fill plug.
Have a look at WIS instructions for W212 and W221:
https://mbworld.org/forums/e-class-w...fluid-how.html
Also look at ebay photos of W222 front axle carrier, it's the same principle as W212 and W221.
Have a look at WIS instructions for W212 and W221:
https://mbworld.org/forums/e-class-w...fluid-how.html
Also look at ebay photos of W222 front axle carrier, it's the same principle as W212 and W221.
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Super Member
Joined: Jan 2009
Posts: 566
Likes: 261
From: In The Woods
2019 W222 S560 4Matic/2025 Yukon Denali
Mercedes sells an adapter for filling that can be used for filling the diffs.
For the front diff there is no fill, only drain.
use this adapter to refill the front diff then use finger method to hold fluid while you get the plug back on.
if your doing the trans, you are doing yourself a disservice by not also draining the torque converter. That holds about 3-4l.
almost half the fluid in the system.
For the front diff there is no fill, only drain.
use this adapter to refill the front diff then use finger method to hold fluid while you get the plug back on.
if your doing the trans, you are doing yourself a disservice by not also draining the torque converter. That holds about 3-4l.
almost half the fluid in the system.
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