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M2 Technical Topics > Mechanical Maintenance: Break-in | Oil & Fluids | Servicing | TSB | Recalls > 1200 Mile Service - Trans and Diff?

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      08-19-2019, 06:05 PM   #1
MisterGoober
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1200 Mile Service - Trans and Diff?

Just got back from my 1200 mile service and my dealer is saying that it's an oil change only and not the transmission and diff?

Has anyone else had the 1200 mile done on their 2020? Can you confirm if the dealer did the diff and trans? Anyone have links to what should be included at each service interval?
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      08-19-2019, 06:48 PM   #2
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I got my 1,200 service last Friday and they did engine oil and diff, it was on my invoice.
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      08-19-2019, 06:52 PM   #3
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I called the Genius Line and supposedly for 2020 only the oil is required?!?
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      08-19-2019, 07:02 PM   #4
speedsnice
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My car is a 2020, the third part number on the service receipt is for the fluid that is used on the rear differential. I use the same fluid on my e36 M3 when I service it.
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      08-19-2019, 07:25 PM   #5
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Transmission is lifetime. I did oil change and diff fluid during my break in, but I'm overseas and warranty doesn't cover servicing.. I paid for everything out of pocket.
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      08-19-2019, 09:08 PM   #6
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Yes, engine oil and diff fluid. I don't believe in BMW "lifetime" fluids and will be changing the tranny fluid at 50K miles.
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      08-20-2019, 06:43 AM   #7
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Thanks for the responses. Especially to Speedsince.

I didn't recognize the short line item for XJ-SAF. It was sitting there next to oil, filter, crush washer etc.

The service advisor didn't recognize the XJ-SAF line item either apparently, because he told me they didn't do the diff fluid anymore when I asked (i'm sure they are clueless and aren't involved much is what the techs actually are doing).

After going through the invoice again, looks like it was done, just not easy to recognize. Thanks to others for posting their receipts. Wouldn't have known otherwise.
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      08-20-2019, 06:46 AM   #8
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They changed diff fluid on my 2020. Not sure if it makes a difference but I had my 1200 service done in Germany.
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      08-20-2019, 11:21 AM   #9
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Quote:
Originally Posted by MisterGoober View Post
Just got back from my 1200 mile service and my dealer is saying that it's an oil change only and not the transmission and diff?

Has anyone else had the 1200 mile done on their 2020? Can you confirm if the dealer did the diff and trans? Anyone have links to what should be included at each service interval?
They did oil and diff update. No transmission update.

However this diff update completely messed up the steering feel. The on center now has lot of slack and overall steering feels disconnected and less taut. I have already checked all my tire pressures multiple times and have no alignment issues. I have not hit a single pothole so far.

So it has to be the update that messed everything up. My dealer denies that and I'm thinking to take my car elsewhere.

I believe some of the other folks might be experiencing the same issue.

I own a 2019 M2C, built end of September 2018 and delivered in November 2018.
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      08-20-2019, 01:52 PM   #10
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Changing the differential fluid is "highly unlikely" to have changed the steering feel as it will only have an effect when you're putting enough power though the transmission to cause the differential to fully or partially lock (so basically breaking traction).

Or were you talking about something else entirely?
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      08-20-2019, 06:33 PM   #11
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Quote:
Originally Posted by M Fifty View Post
Changing the differential fluid is "highly unlikely" to have changed the steering feel as it will only have an effect when you're putting enough power though the transmission to cause the differential to fully or partially lock (so basically breaking traction).

Or were you talking about something else entirely?
Something else entirely.

Dealership did a 1,200 mile service and they updated "something". I didn't do a good job of reviewing the notes at that time when I picked up my car. But that "something" messed up the steering.

If any else having same issue then please chime in.
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      08-29-2019, 06:58 AM   #12
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Mine goes in on 9/11, the dealer said oil and diff. I'll pay attention to how it handles after.
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      08-29-2019, 08:46 AM   #13
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Just had my service done. No diff fluid change.
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      08-29-2019, 10:43 AM   #14
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Quote:
Originally Posted by mcvaughan View Post
Just had my service done. No diff fluid change.
Assuming you're talking about your break-in service, then they did it wrong

https://www.newtis.info/tisv2/a/en/f...nce/1VnYk48ozi

Last edited by CTSean; 08-29-2019 at 10:44 AM.. Reason: spellang
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      09-04-2019, 09:14 AM   #15
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If you have the 6MT, changing all fluids is sensible. Significant amounts of metal in the transmission after the running-in period. They will only comp the Engine and Rear Diff.

I think it was $120 for the 6MT change, including fluid (at least in my case).
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      10-20-2019, 10:01 AM   #16
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Quote:
Originally Posted by CTSean View Post
Quote:
Originally Posted by mcvaughan View Post
Just had my service done. No diff fluid change.
Assuming you're talking about your break-in service, then they did it wrong

https://www.newtis.info/tisv2/a/en/f...nce/1VnYk48ozi
My indy shop inspected and found nothing in the diff fluid. No need to change it.
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      10-22-2019, 07:51 AM   #17
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My 2020 goes in on Friday. I will let you know...
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      10-22-2019, 08:59 AM   #18
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Quote:
Originally Posted by hlm2c View Post
Transmission is lifetime. I did oil change and diff fluid during my break in, but I'm overseas and warranty doesn't cover servicing.. I paid for everything out of pocket.
The DCT is not lifetime fluid. ZF themselves released a video to combat the stupid claims from automakers that their transmissions use lifetime fluid. ZF recommends regular fluid changes too
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      10-22-2019, 09:28 AM   #19
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Dropping my car off right now for the 1200 service. Service advisor said that they unlimit the full amount of horsepower after this service? Mentioned around 100 hp or so. Is that true??
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      10-22-2019, 02:05 PM   #20
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Quote:
Originally Posted by Triple Seven View Post
Dropping my car off right now for the 1200 service. Service advisor said that they unlimit the full amount of horsepower after this service? Mentioned around 100 hp or so. Is that true??
Got her back, doesnt feel any faster.
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      10-22-2019, 05:16 PM   #21
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Quote:
Originally Posted by Triple Seven View Post
Dropping my car off right now for the 1200 service. Service advisor said that they unlimit the full amount of horsepower after this service? Mentioned around 100 hp or so. Is that true??
it is not true
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      10-22-2019, 05:25 PM   #22
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Quote:
Originally Posted by CTSean View Post
it is not true
Didnt think so, I wonder why they say such things.
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