Front Engine Cover leaking oil
Thread Starter
Newbie
Joined: Jan 2025
Posts: 6
Likes: 0
From: Austin, TX
2016 C450 AMG; 2026 Tesla Model Y Launch Edition
Front Engine Cover leaking oil
2016 C450 with 62K mile on it. Dealer found oil leaking from the front cover and quoted $1,883 to reseal front cover.
MB dealer diagnosis: https://drive.google.com/file/d/1EBI...ew?usp=sharing
(1:30 mark)
Is this normal for this mileage?
Is its hard to do? Should I local Euro specialised shop to do it?
I've got dealer quoting over $10K for rear differential, engine cover reseal, break pads and tire replacement so I am trying to get all these done at a more reasonable price. I'm going to do the brakes and get the tires from Tirerack, but will have someone do the rear differential and engine cover.
Thanks!
MB dealer diagnosis: https://drive.google.com/file/d/1EBI...ew?usp=sharing
(1:30 mark)
Is this normal for this mileage?
Is its hard to do? Should I local Euro specialised shop to do it?
I've got dealer quoting over $10K for rear differential, engine cover reseal, break pads and tire replacement so I am trying to get all these done at a more reasonable price. I'm going to do the brakes and get the tires from Tirerack, but will have someone do the rear differential and engine cover.
Thanks!
Super Member
Joined: Dec 2015
Posts: 599
Likes: 237
From: Suburban Maryland
2023 E 450 Sedan. 2018 GLC 300. 2013 E 350 Coupe (retired)
A few independent shops in Austin:
https://www.google.com/url?sa=t&sour...cxkvOQneYNIuDc
I wonder if changing the rear differential fluid would help, at least temporarily?
https://www.google.com/url?sa=t&sour...cxkvOQneYNIuDc
I wonder if changing the rear differential fluid would help, at least temporarily?
Last edited by smiles201; Feb 8, 2026 at 01:50 PM.
Out Of Control!!
Joined: Apr 2019
Posts: 11,921
Likes: 6,775
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
useful combined items
2016 C450 with 62K mile on it. Dealer found oil leaking from the front cover and quoted $1,883 to reseal front cover.
MB dealer diagnosis: https://drive.google.com/file/d/1EBI...ew?usp=sharing
(1:30 mark)
Is this normal for this mileage?
Is its hard to do? Should I local Euro specialised shop to do it?
I've got dealer quoting over $10K for rear differential, engine cover reseal, break pads and tire replacement so I am trying to get all these done at a more reasonable price. I'm going to do the brakes and get the tires from Tirerack, but will have someone do the rear differential and engine cover.
Thanks!
MB dealer diagnosis: https://drive.google.com/file/d/1EBI...ew?usp=sharing
(1:30 mark)
Is this normal for this mileage?
Is its hard to do? Should I local Euro specialised shop to do it?
I've got dealer quoting over $10K for rear differential, engine cover reseal, break pads and tire replacement so I am trying to get all these done at a more reasonable price. I'm going to do the brakes and get the tires from Tirerack, but will have someone do the rear differential and engine cover.
Thanks!
No sense paying twice for same thing.
Instead... replace intake VVT Phaser(s) + tensioner(s).
That job includes the leaky RTV seal with new aluminum screws.
Now at the same time deal with leaky CPS, pigtails and solenoids before reaching "engine out harness job".
Last edited by CaliBenzDriver; Feb 8, 2026 at 10:59 PM.
Thread Starter
Newbie
Joined: Jan 2025
Posts: 6
Likes: 0
From: Austin, TX
2016 C450 AMG; 2026 Tesla Model Y Launch Edition
A few independent shops in Austin:
https://www.google.com/url?sa=t&sour...cxkvOQneYNIuDc
I wonder if changing the rear differential fluid would help, at least temporarily?
https://www.google.com/url?sa=t&sour...cxkvOQneYNIuDc
I wonder if changing the rear differential fluid would help, at least temporarily?
Senior Member
Joined: May 2004
Posts: 474
Likes: 36
From: Central Ohio
2017 C43, 1966 230SL, 2006 Jeep Rubicon
Same here, covers leaked and dealership repaired for big $$. I think I created a thread on it. After searching here, I wish I had done the work myself. And yes, look at the other "while you're in there" jobs. It's really good advice.
Last edited by GermanCarShow; Mar 6, 2026 at 12:43 AM.
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Thread Starter
Newbie
Joined: Jan 2025
Posts: 6
Likes: 0
From: Austin, TX
2016 C450 AMG; 2026 Tesla Model Y Launch Edition
I had all the repairs done … but divided things up.
I got new tires from Tirerack.com $1,000 for Continental Extremecontact DWS 06
then I had a transmission shop replace the rear diff $3,900
and just got the dealer to fix the engine leak this week $1,700
so I’m spent out about $6.6K so far.
i figure its ok since will will probably keep the car another 10 years since it only has 62K miles on it .
I’ve ordered rear brake rotors and pads from FCP Euro and will do those myself soon. $400
I’ve spent $10K in maintenance on the car in the first 10 years before these recent fixes. We’ll see if the costs go up or down. I’ll be doing the simple stuff like oil changes, brakes, battery, etc in my own whereas the first 8 years were purely dealer maintained.
I got new tires from Tirerack.com $1,000 for Continental Extremecontact DWS 06
then I had a transmission shop replace the rear diff $3,900
and just got the dealer to fix the engine leak this week $1,700
so I’m spent out about $6.6K so far.
i figure its ok since will will probably keep the car another 10 years since it only has 62K miles on it .
I’ve ordered rear brake rotors and pads from FCP Euro and will do those myself soon. $400
I’ve spent $10K in maintenance on the car in the first 10 years before these recent fixes. We’ll see if the costs go up or down. I’ll be doing the simple stuff like oil changes, brakes, battery, etc in my own whereas the first 8 years were purely dealer maintained.
Last edited by ElvisATX; Mar 6, 2026 at 07:00 PM.
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