Rear Differential Service- Advice Needed
Thread Starter
MBWorld Fanatic!
Joined: Oct 2008
Posts: 2,601
Likes: 28
From: Atlanta, GA
2008 C300 Sport 6 Speed Manual, 1953 Chevy Bel-Air, 2015 Audi allroad, 1963 Chevy Apache
Rear Differential Service- Advice Needed
The owner's manual doesn't list any recommendations on changing the rear differential fluid on the rear drive C class.
The dealer has recommended it the last couple times I have been in but I have deferred.
Couple of questions:
How often, if ever, do you guys change your differential fluid on your non 4Matics?
Does the OEM plug have a magnet? If not, I will buy a Dimple brand plug before I do it.
http://www.drainplugmagnets.com/mercedesbenz.php (bottom of page)
In general, will the dealer use an aftermarket plug if I decide to ask them to perform the change?
The dealer has recommended it the last couple times I have been in but I have deferred.
Couple of questions:
How often, if ever, do you guys change your differential fluid on your non 4Matics?
Does the OEM plug have a magnet? If not, I will buy a Dimple brand plug before I do it.
http://www.drainplugmagnets.com/mercedesbenz.php (bottom of page)
In general, will the dealer use an aftermarket plug if I decide to ask them to perform the change?
MBWorld Fanatic!
Joined: Mar 2006
Posts: 1,375
Likes: 16
From: Hong Kong
2010 C200 CGI
I change mine every year along with the tranny fluid. Doesn't cost much for this piece of mind. I run Fuchs 4134 for the tranny and castrol 75w90 before but Fuchs diff oil now. We reuse the hardware for the rear diff after cleaning it.
Thread Starter
MBWorld Fanatic!
Joined: Oct 2008
Posts: 2,601
Likes: 28
From: Atlanta, GA
2008 C300 Sport 6 Speed Manual, 1953 Chevy Bel-Air, 2015 Audi allroad, 1963 Chevy Apache
Every year? Wow, that seems like a little bit of overkill...but since MB doesn't give guidance, I suppose it's whatever makes you comfortable.
Does Glyn or any of our other genius gearheads have any input?
At least, does anyone know if the OEM plug has a magnet?
Does Glyn or any of our other genius gearheads have any input?
At least, does anyone know if the OEM plug has a magnet?
Member
Joined: Oct 2015
Posts: 122
Likes: 1
c300 Sport
I go more off mileage than time. I caught the mention of changing it with the tranny fluid which I do as well, but missed the 'every year' part. Every 30k or so is comfortable for me. Keeping in mind these are synthetic fluids. This may help...
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From: Los Angeles, CA
2015 C400 Tenorite Gray
They are quoting $299 American Dollars.
Last edited by Nicholi2007; Jan 31, 2020 at 03:38 PM.
