[Demon Barber]

In case anyone is interested in changing these fluids down the road, I went to my local dealership parts department and had them look up the part numbers for these fluids. Attached is a pic of what they gave me, although they couldn't tell me specific volumes. I am fairly certain the diffs and transfer case are drain with either a drain plug or vacuum pump and refill to the level of the fill plug, but someone feel free to correct me if I'm wrong. Transmission, I'm not so sure. May need ista computer to purge the fluid and cycle the new fluid. Will have to research that procedure more in depth.

[Villy]

Any information at what KM/Miles these should be changed? I have not been able to find any official information on it and it's been a concern recently..

[Demon Barber]

Originally Posted by Villy

Any information at what KM/Miles these should be changed? I have not been able to find any official information on it and it's been a concern recently..

I cannot find any recommendations from BMW about when to change any of them. I suspect that there will not be any rec at all regarding the auto transmission fluid, as they seem to staunchly claim "lifetime fluid, do not change" but I'll definitely be changing mine, probably around 50k miles. I think I'll do diffs and transfer case fluids at 50k as well.

[AHall]

There is a maintenance manual. It lists the mileage at which certain service are to be performed. Oddly enough, the front differential is not mentioned. The service manual only goes up to 60,000 miles.

[Danny D]

I typically do all my main Fluids like these and coolant etc. every 50,000 KM.
Regardless of what the say, I keep my cars for a long time.

I just did the diffs, in the caddy and the front one had some silver in it, probably metal shavings.

[afk8445]

My 2018 F90 is requesting me to change these fluids, current mileage is 28K miles, car is March 2018, so close to 4 years.
quote from dealer is obviously way more
rear diff -->315
front diff -->315
transfer case -->408

[Demon Barber]

Originally Posted by afk8445

My 2018 F90 is requesting me to change these fluids, current mileage is 28K miles, car is March 2018, so close to 4 years.
quote from dealer is obviously way more
rear diff -->315
front diff -->315
transfer case -->408

How did it notify you? Only by dealership scanning the key, or did it pop up in idrive?

[afk8445]

Originally Posted by Demon Barber

How did it notify you? Only by dealership scanning the key, or did it pop up in idrive?

dealership scanning the key.
and so, i asked for a quote.