01-31-2023, 09:51 PM | #1 |
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'23 M5C Run in service today
FYI.. I had read that the Run In service only replaced the rear Diff Fluid + Engine Oil / Filter.
My dealer replaced the Front and Rear diff fluid + engine Oil/ Filter. So, I've got that going for me ! My SA was surprised when I questioned him that I had understood only the rear diff fluid was done . Car runs amazing , ready to take her out for some real rips now !
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2023 M5 Competition: Marina Bay Blue l Silverstone Merino Leather l Type 789 Rims l Executive Package l Acquired 12/30/2022
Prior BMW's 2011 550iMSport, 2008 5501MSport, 2005 5451, 1993 325iS |
02-01-2023, 07:38 PM | #4 | |
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02-07-2023, 10:37 AM | #5 |
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09-01-2023, 03:11 PM | #6 |
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Also coming up on break-in service for an F90 and dealer told me only rear diff fluid will be changed and if I wanted front diff fluid to be changed as well, I would have to pay out of pocket…is this necessary and/or worth it (to have front diff fluid changed too)?
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09-02-2023, 03:41 AM | #7 | |
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09-02-2023, 04:59 PM | #8 |
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When I brought mine in for 1200 mi service back in March, dealer said that only the rear differential had the break-in fluid.
When I questioned it, they showed me the actual BMW service bulletin that said the same. Dealer said ithey used to do it but BMW changed it. |
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09-04-2023, 09:21 AM | #10 |
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They used to do it for the break in service and stopped, probably realized it was cost prohibitive and pretty useless at 1200 miles
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09-04-2023, 09:35 AM | #11 |
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Drives: 23 M5C, 19 X5
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The front diff is also the same as the one in the G12 7 series. So it probably never made sense for it to have a break in service in the M. That said I plan to do all the drivetrain fluids around 50k miles. Maybe sooner if I'm feeling motivated or I track it.
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