[smaglik]

Originally Posted by TwinSnailz

https://a.co/d/hkvvqjQ
You need to look for the opaque white silicone flex tube. Not the clear tube as they are pvc.

Thanks a bunch!

[Astone22]

Is 40k miles on my 2020 m40 a waste to do the diffs and transfer case ?

[X3dr1ver]

Originally Posted by Astone22

Is 40k miles on my 2020 m40 a waste to do the diffs and transfer case ?

Unless driven exceptionally hard, i'd stretch it to 100k km no problem.

[Jolbex]

Did it at 50kkm. Waste of time and money. The fluids were virgin state. I drive it very hard, but no track or launching it.

[Astone22]

Originally Posted by X3dr1ver

Unless driven exceptionally hard, i'd stretch it to 100k km no problem.

Thanks does the car being 6 years old make any difference?

[smaglik]

Originally Posted by Astone22

Thanks does the car being 6 years old make any difference?

With these types of fluids, it's mileage not age. 50k miles seems to be a good interval for them. (knock on wood) I have an e83 with 216k on it, started changing driveline every 50k at 75k miles when I got it, and have not had any issue with anything down there (manual transmission).

[Astone22]

Originally Posted by smaglik

With these types of fluids, it's mileage not age. 50k miles seems to be a good interval for them. (knock on wood) I have an e83 with 216k on it, started changing driveline every 50k at 75k miles when I got it, and have not had any issue with anything down there (manual transmission).

Awesome thank you! Should I also wait on spark plugs

[Jolbex]

No

[dvrmstrng]

Originally Posted by joebu

Wow, great info! He was a BMW master tech before going independent. But he didn't know about the other chamber, nor did I. Thanks for this. I plan on doing the Xfer case fluid regularly. So maybe can do that chamber next time... I'll ask him about the ISTA. He has some fancy diag tools but not sure about that one.

Someone here (you can dig and find it) used ISTA to open the second chamber and got no extra fluid out. Just food for thought.

[Jolbex]

I got 7dcl out by opening it

[dvrmstrng]

Getting ready to do this service. Can anyone who has skipped ISTA chime in and let me know how it went. My car is a weekend toy and I figured I’d skip ISTA and just halve the interval for fluid changes.

[RRedline]

My 2021 xdrive 30i just hit 96k miles. My water pump was leaking ($1474) and oil was leaking from the balance shaft end caps ($813).

While in for those services, asked my dealer to quote transmission, transfer case and diff fluid changes and here's what they came back with:

Transfer case, front and rear diff - $1299
Transmission flush/filter - $1798

I said no thanks -- need to find a good indy shop on the south shore.

[Wgosma]

Originally Posted by RRedline

My 2021 xdrive 30i just hit 96k miles. My water pump was leaking ($1474) and oil was leaking from the balance shaft end caps ($813).

While in for those services, asked my dealer to quote transmission, transfer case and diff fluid changes and here's what they came back with:

Transfer case, front and rear diff - $1299
Transmission flush/filter - $1798

I said no thanks -- need to find a good indy shop on the south shore.

Bit off topic….how is your OF housing and Heat Management Module holding up?

[RRedline]

Originally Posted by Wgosma

Bit off topic….how is your OF housing and Heat Management Module holding up?

No problems yet...fingers crossed.

[Jolbex]

At this mileage dont flush the tranny, just change oil

[Astone22]

Originally Posted by RRedline

My 2021 xdrive 30i just hit 96k miles. My water pump was leaking ($1474) and oil was leaking from the balance shaft end caps ($813).

While in for those services, asked my dealer to quote transmission, transfer case and diff fluid changes and here's what they came back with:

Transfer case, front and rear diff - $1299
Transmission flush/filter - $1798

I said no thanks -- need to find a good indy shop on the south shore.

I just paid $900 at the dealer for 2 diffs and transfer case service fwiw

[alyoseua]

Hello everyone,

I need a help. My car has low vibration when I start driving at low speed and attept to slow down. The dealership recommended to replace to transfer case which cost around 5500$. Is it required to do it as they recommended or just replace oil as some mechanic said.
My car is BMW X3 M40i. 2019

[Wgosma]

Originally Posted by alyoseua

Hello everyone,

I need a help. My car has low vibration when I start driving at low speed and attept to slow down. The dealership recommended to replace to transfer case which cost around 5500$. Is it required to do it as they recommended or just replace oil as some mechanic said.

My car is BMW X3 M40i. 2019

No one here can diagnose the problem with your car- suggest you take it to another Dealership or Independent BMW shop and get a 2nd opinion on the issue. Replacing the fluid may be the solution, it’s certainly not an expensive job compared to replacing the entire xfer case.

[smaglik]

Originally Posted by alyoseua

Hello everyone,

I need a help. My car has low vibration when I start driving at low speed and attept to slow down. The dealership recommended to replace to transfer case which cost around 5500$. Is it required to do it as they recommended or just replace oil as some mechanic said.
My car is BMW X3 M40i. 2019

I suggest you search on this issue, and if you find nothing, start a new thread with a proper title. Burying a question deep in a thread like this will not likely lead to much help as those who might be able to help world have to randomly stumble in here to see it...

[Astone23]

Originally Posted by alyoseua

Hello everyone,

I need a help. My car has low vibration when I start driving at low speed and attept to slow down. The dealership recommended to replace to transfer case which cost around 5500$. Is it required to do it as they recommended or just replace oil as some mechanic said.
My car is BMW X3 M40i. 2019

How many miles are on the car?

[admranger]

alyoseua Get the transfer case fluid changed (as well as F&R diff fluid) at an independent BMW service shop. There's a ton of them around you. If that doesn't help you're likely in for a transfer case swap. Again, the independents might have a better deal than the dealer.