Diff fluid change intervals?

NoMods · 06-07-2023, 09:54 AM

I know they change it after the 1200 mile break in, but is that only the rear?

What about the center transfer case and front diff? Thoughts?

pbonsalb · 06-07-2023, 10:16 AM

I am about to do all of mine at 45k. Front diff, rear diff, transfer case, and transmission.

Revan · 06-10-2023, 04:44 PM

When I did my 2 day M School in February, I asked Rafael and he told me if you track your car at all to change rear differential every 7500 miles. Said that waiting until BMW change interval is no 1 cause of differential troubles.

He also said to always change transmission at 50k and that oil should be every 5k mi.

pbonsalb · 06-10-2023, 05:30 PM

Probably less than 1% of F90 M5 owners will track their car even once. But preventative maintenance won’t hurt.

PDOT · 06-10-2023, 08:34 PM

Quote:

Originally Posted by Revan

When I did my 2 day M School in February, I asked Rafael and he told me if you track your car at all to change rear differential every 7500 miles. Said that waiting until BMW change interval is no 1 cause of differential troubles.

He also said to always change transmission at 50k and that oil should be every 5k mi.

How much is that service? Should you change the front and transfer case as well?

NoMods · 06-11-2023, 08:20 AM

Quote:

Originally Posted by PDOT

How much is that service? Should you change the front and transfer case as well?

Good point. I wonder about that also as it’s cheaper insurance along with 5k oil intervals or less.

Revan · 06-11-2023, 08:52 AM

Quote:

Originally Posted by PDOT

How much is that service? Should you change the front and transfer case as well?

I don't know. I only have 1800mi right now. I do have a local shop that is fully BMW certified that I will be taking it to. The owner holds record for top speed in stock M5.

Maverik259 · 10-08-2023, 11:34 PM

Quote:

Originally Posted by Revan

I don't know. I only have 1800mi right now. I do have a local shop that is fully BMW certified that I will be taking it to. The owner holds record for top speed in stock M5.

Lmao

06-07-2023, 09:54 AM	#1
NoMods Colonel 1121 Rep 2,327 Posts Drives: 2022 M5 Join Date: May 2006 Location: USA iTrader: (10) Garage List 2022 M5 [10.00]	Diff fluid change intervals? I know they change it after the 1200 mile break in, but is that only the rear? What about the center transfer case and front diff? Thoughts?
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06-07-2023, 10:16 AM	#2
pbonsalb Lieutenant General 5264 Rep 10,647 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	I am about to do all of mine at 45k. Front diff, rear diff, transfer case, and transmission.
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06-10-2023, 04:44 PM	#3
Revan Private First Class 114 Rep 120 Posts Drives: 2023 M5C Join Date: Oct 2022 Location: FL iTrader: (0)	When I did my 2 day M School in February, I asked Rafael and he told me if you track your car at all to change rear differential every 7500 miles. Said that waiting until BMW change interval is no 1 cause of differential troubles. He also said to always change transmission at 50k and that oil should be every 5k mi.
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06-10-2023, 05:30 PM	#4
pbonsalb Lieutenant General 5264 Rep 10,647 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	Probably less than 1% of F90 M5 owners will track their car even once. But preventative maintenance won’t hurt.
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