superswiss

I just spoke to AMG Germany to confirm what @roken reported on another thread regarding the 2000 mile/3000 km locking differential oil change no longer being necessary. I confirmed it specially for my US spec C63CS chassis number. They confirmed that the oil change used to be required, but no longer is. The oil is now required to be changed every 50,000 km or every 3 years. Since I'm at 3000km now, this saves me from having to get it done while in Europe.

boosteddub69

This is awesome news. I was preparing to do the oil change on mine, nice to know I won't have to for a while.

Thanks for posting this.

Dilinquint

I just picked up my car the other day and my dealer actually told me to come in for the oil change at 3k. It’s included on my agreement, so I’m assuming there’s no harm in getting it done anyway?

srO_Michael_Orz

I double Checked WIS, it still states even MY 2019 still need perform 3000km first Diff oil change.

boosteddub69

Hmmm....this tells me to just go ahead and do it for peace of mind.

japamg

I still did it.

Dilinquint

Is there any reasoning (apart from the inconvenience) for not having it done?

Xec

Me too.

myfavedave

My 2019 C63 is definitely due for the 1800 mile differential oil change. I've had an invite from Mercedes UK directly to have it done at no cost to me.

skim7x

Yeah why would you NOT change it

KingMonkeyJr

I did my rear differential flush at 2k miles and believe me what comes out of it you should lol.

Im planning on doing mine every 10k miles. Only takes about an hour to do so in the garage at home

Al718

Dealer charged me $292 for it. Rip just for half a litre of oil and 10 minutes worth of labour.

superswiss

I decided to get it done anyway. It's definitely an inconvenience being on the go, but I found a local dealership near Frankfurt that squeezed me in for Monday. I'm a bit late as I have 2500 miles and I'm going to the Nurburgring this weekend, but better safe than sorry I guess.

RDOCA

Not much difference in cost but I think it uses 3 each - 1/2 liter bottles of diff oil. Mine was $19.99 per bottle.

boosteddub69

Just for grins, I double checked my 2019 AMG owner's manual supplement and it states the diff oil change is necessary at 2000 miles. For anyone who's still on the fence about doing it on a 2019...just do it.

superswiss

Got the car back from the local dealership. For reference I paid 134 EUR plus 19% VAT for a total of 159 EUR. That comes out to 178 USD or 150 USD before VAT. Three bottles of oil and two screws.

Al718

Oh yeah that’s right 3 bottles, I didn’t see that 3.

markjord

Yes, I’ve had my car a week now and am still making my way through the manual but I also spotted that in the supplement.

04S

Had it done at my dealership in Sydney a couple of weeks ago - no charge.

jj18

superswiss

Yes and the thing is my coupe no longer has this sticker. It only has the one above about engine break in. This is perhaps the clearest indication that it is indeed no longer required. I remember this sticker from the 2018 coupes I test drove.

KingMonkeyJr

You may as well do the service. It doesn’t cost much and will only help longevity of the car.

As I said before I did the service at 2k miles and plan on every 10k miles. I’m just doing it in my garage as it only needs 1.5 bottles of royal purple.

superswiss

Yes, I ended up doing it anyway. I found a local dealership in the Frankfurt area that could squeeze me in on short notice. I do extra engine oil changes, too, so I have no issues with doing the diff oil change. It was just rather difficult to get it done while traveling through Europe, and obviously AMG did change something and officially no longer requires the extra oil change. There's no longer sticker on the windshield about it, but looks like they haven't updated the owner's manual yet, and both @roken and I had AMG Germany itself tell us that it is no longer needed. I guess one could speculate why. Did they see adverse effects from changing the oil that early, or did they revise the differential for 2019?

msd3075

Per the head tech at my dealer, the 2K mile differential oil change is required on the mechanical differentials ('15-'18 C63) and never truly was required on the electronic differentials (all C63S and '19+ C63). No one at MB/AMG ever really updated the manuals/stickers/guidelines to reflect this and just kept with the same old adage that any AMG with a locking rear diff needed the service. Now with the '19 C63 coming standard with the electronic differential, all has been updated to reflect that the 2K mile service isn't needed.

If you want to change it, go for it. More than likely won't hurt anything. But it isn't (and wasn't) required anymore.

boosteddub69

It would be nice if MB would update their info. I just walked out and looked at my car and it too does NOT have the sticker about the "additional oil change" but the 2019 owners supplement lists it as a necessary maintenance item. Sheesh.