Per the supplemental AMG guide, a 2000 mile rear diff oil change is required - ya'll been doing this? I did check with my dealer and they said it IS included with my 2 yr pre-paid maintenance, although not specifically mentioned anywhere (you betcha I got that in writing )

 

There's at least one other long thread on this. Just do a search. It is officially no longer required since 2019. They changed the friction materials or something in 2019. It's still mentioned in the English owner's manual for lack of proper translation, and it got poorly communicated to dealerships etc. The cars that require it have a sticker in the windshield below the engine break-in instructions that advises of the required rear diff fluid change. The German owner's manual correctly reflects that. I picked my car up in Germany and called AMG Germany to confirm for my VIN and they confirmed that it is no longer required. I still ended up doing it for a piece of mind, but I did it around 3000 miles as I first had to find a dealership in Germany that could squeeze me in while I was driving through town.

 

I appreciate that reply --- unfortunately I had no such window sticker on my car that referenced break in - and in fact, I had no idea there was even such a requirement until I read the owner manual and supplemental insert for the AMG. Obviously my dealer dropped the ball on that.

 

2019 fl here and I had the run in procedure stickers and even if it was not necessary on 2019+ models I still got it done at around 3000km from memory.
For me sometimes it's more about taking care of the car rather than if it's needed or not.

 

When I purchased my new C63S coupe in April 2019 the sticker was placed on windshield warning on Breaking In period and the differential oil change. The Service Tech. also advised me of both. See photo below.
I had it done about 1, 700 miles and paid out of pocket.
I recently had Service B (13K miles)completed at MB dealersip $850. Paid out of pocket. I thought I may need front brakes but still had 4-5 mm. SA said brake pad warning will come on at 2mm.
SA recommended I pay as I have been on my next service which will be 3 year/30K service. Then consider purchasing a Pre- Paid Maintenance on the day I bring my car in for the 4 year/40K which will be in 2023.
That way my Service will be covered by contract for 4 year/40K, 5 year/50K miles and 6 year/60K miles.
The Pre- Package Maintenance is available two ways:
2 year package: $1,490+,tax. (4 year/40K and 5 year/50K).

3 year package: $2,190+tax. ( 4 year/40K, 5 years/50K and 6 year/60K


* Note, the 5 year/50K Service includes Spark Plug change and will be over $1,000 for this Service.
* the 6 year/60,000 mile Service includes the transmission service.
The car will be out of warranty on the 5th and 6 years service. Something to consider.
Atrached are 3 copies of MB Service work sheet that was given to me by SA. The top of each page going across shows check list of Service to be performed in:
Miles(thousands)
Years

 

Really good info -- thanks very much for sharing! I did find and read the other thread on this discussion - plenty of good stuff there as well too. I do plan on having the fluid changed at 2k miles - sticker or no sticker - and MB needs to update their manuals and supplemental guides. Heck, I might even spring for an additional 2 or 3 more years of pre-paid maintenance

 

Those services pictures are blurry.
- What is included in 1st year/10K mile, 2nd year/20K mile, 3rd year/30K miles services?
- How much would each cost out of pocket?
- How much does it cost for inital rear diff fluid replacement?
- Can anybody comment on when we are allowed to purchase Pre-Paid maintenance, or if we in fact can pick and choose at what point in time we purchase it?

 

I bought my pre-paid 2 yr maintenance at initial purchase, however the dealer told me that maintenance packages can be bought anytime, and that each dealer sets their own price.....so I bought 2 yrs. and will likely add to it. "A" and "B" services are covered in the owner maintenance manual - for prices you can just call around and ask for best gauge.

 

I believed it cost me somewhere around $200 for differential oil change done at 1,700 miles.
Regarding my above post the SA stated I could simply purchase the Pre-Paid Maintenance Contract the same day my car was due for that Service.
Hope the 3 photos are clearer, showing MB work sheets supplied to me by SA.

 

Thank you. Much appreciated!

 

Back in 2000, BMW released their e38 M5. It was truly the best four door sedan ever. Some suggest it still is.

The entire drivetrain needed to be broken in. Engine included. The dealerships didn’t know this. The owners didn’t know this. It was learned the hard way by many for about two years. That’s why you never buy one unless it’s a 2002 or newer.

The diff fluid was changed in mine at no charge at 2,000 miles. And we followed the break-in procedure exactly as documentation stated.

 

You will be okay I have 4.2k miles on my 2021 C63s its a scam to change the rear diff at 2k. You can wait till the first service to do anything the car is meant to drive and it comes with brand new oil & filters. Side note on the filters I recommend checking your engine filters out. Mine came damaged from the factory...... Check out my YouTube!


Follow me on IG: _cexy63s

 

I kept mine under 85 mph & below 4k rpm until 2k. I also mixed my driving up between back roads & high way driving did not let the tank go below half for the first 2k miles. Follow me on IG: _cexy63s & check out my YouTube !

 

I drove mine irresponsibly, like a grandma, highway, backroad, pedal down, fast, slow, paddle double downshift, and everywhere in between - like a proper break in I did let it warm up properly each time and do think the graphic AMG gives you for trans and oil temp is pretty slick!

 

Has anybody else asked their dealer to check out their new engine filters before driving off the lot with their new C63S? Is that a big ask, meaning is that some sort of significant labor that I wouldn't be able to justify just because I read something on a forum? You know what I mean? If it's a quick think to check, I can see where its no big deal to ask. Has anybody else had this issue with new car and new damaged or ill-fitting engine filter? Is this a known issue that they would he obliged to check?

 

Along similar lines to replacing rear diff oil at 2,000 miles, but not quite the same question... the break-in period. I have the sticker on the window that says what the limits are below 1,000 miles for engine break-in. It then states "gradual" progression of engine activity. Can anybody provide more specifics about what to do AFTER the 1,000 mile mark is reached? Is it safe to floor it? Go out and drive it full-time in Sport Plus or Race?
And yes, I know what gradual means. I'm just looking for guidance from those with experience on the car. My car is a '21 C63S coupe.
Thanks to anyone who chimes in.

 

I had no such 'break in' - I warmed it up and drove it, sometimes hard, sometimes not hard - sometimes both Your results may vary - however from my racing days (and any race shop engine builder will tell you) this is how you do it. Enjoy your ride!

 

Cool. Thank you for the feedback

 

In all seriousness -- what I do (and I'm sure others do as well) shouldn't necessarily take the place of what the OEM recommends - definitely do your own research and take care of your car the best way you see fit
I can say this -- when I went in for my 2000 diff service not a word was said by anyone regarding how I drove the car during the "break in" - the car can take much more than your average driver will demand of it

 

changing any fluid 2000 miles into a cars life is a bit ridiculous. no car should come out of a factory needing new fluids within 2000 miles, whether its a mercedes or a saturn. if its just a good thing to change it that soon then thats different, but if a car absolutely needs new fluids within 2000 miles to run properly something is not right.

 

i just bought a 2021 C63 coupe as well an went through the break in period. im at like 2400 miles now. i drove it real gently for the first 1000 miles, low speeds, always in C, gradual acceleration, gradual braking etc. i was just real gentle on the car just to be precautionary, then after 1000 miles i started increasing the accelerating an braking incrementally as i put more miles on. i noticed at the beginning the car would up shift real fast, like too much. it would be in 5th gear by like 35mph, it was annoying because it felt like it had no power because of that. now at 2400 miles im driving it harder an faster but still not pushing the car to its limits. iv only floored the gad pedal maybe 2-3 times total an only taken the top speed up to 100mph. this car hits 100mph like its nothin. after all that the cars running great but obviously im still early in the mileage. btw i live here in the CA valley too, about 2 hours north of fresno.

 

That's an incorrect statement - differential gears require break in due to heating which degrades the oil - especially if you overheat it by not allowing warm up and cool down cycles.

 

so is this change a standard thing in the c63? I’m wondering why that isn’t known an communicated by the MB dealers?

 

Apparently MB is currently up in the air about their requirement to change diff oil at 2000 miles since they modified the diff with the new model - the requirement is still in the OEM manual however not on all the window stickers - dealerships still honor the work as scheduled maintenance it if you bought any of the pre-paid maintenance programs though.

 

It’s known by dealerships. If not, change dealerships. The 2,000 miles differential fluid change is required.