[g20_ghost]

Hey gents I’m coming up to change some fluids so first off I’ve got a 2020 m340i RWD.

For my differential fluid ( I heard these don’t have a front differential just rear if anyone can correct me ? ) but anyways I’m getting this here, I’ll be getting 2 500ml bottles

https://www.fcpeuro.com/products/bmw...mw-83222447362

Next I’m going to get my transfer case fluid changed as well, haven’t seen much info on it but will this do ? And if so is 1 Liter okay or will it need more ?

https://www.fcpeuro.com/products/bmw...ll-83222409710

Also if anyone can recommend what transmission fluid to get or if there’s any kits available that include everything.

Thanks in advance

[g20_ghost]

I found this kit below for the transmission, this looks good ?

https://www.ecstuning.com/b-meyle-pa...001351007~mey/

[E__F]

Originally Posted by g20_ghost

Hey gents I’m coming up to change some fluids so first off I’ve got a 2020 m340i RWD.
___

Next I’m going to get my transfer case fluid changed as well, haven’t seen much info on it but will this do ? And if so is 1 Liter okay or will it need more

If your car is RWD then you don’t have a transfer case.

[g20_ghost]

Originally Posted by E__F

If your car is RWD then you don’t have a transfer case.

Interesting thanks for the heads up, learning more slowly and slowly about the whole thing lol.

So basically if I’m doing fluid change I just need to do the transmission and rear diff ?
don’t worry about the transfer case or front differential since my RWD doesn’t have either correct?

[MattEcho]

Hey y'all, just wanted to share a few quick notes on the fluid change I just completed on my 2021 rear diff.

1. BMW uses one plug for the drain and fill. Which means that they expect you to suction out the fluid. Well, I (like a lot of people I'm sure) used the temp sensor plug to drain the fluid. While not a perfect solution, it gets most of the old fluid out.

2. This was the first fluid change at 20k miles. The fluid was black and very grainy. I'm glad I did it, but wished I had done it earlier.

2. Be careful of reinstalling the temp sensor, I broke mine by over-torquing. Had to get another from local BMW dealer, which was priced at twice I could get online. But then, I wanted it asap to finish the job, ugh.

3. Needed 3 bottles of the 500ml G4 fluid from dealer. So like $180 for three bottles. If I was more careful with spillage and not breaking the sensor, I probably would've only needed 2 bottles.

4. Overall pretty easy and now just waiting on BMW to supply everybody with the G5 fluid so I can do the front diff. Supposedly mid July now, but they keep pushing dates.

[D0NVT]

Originally Posted by D0NVT

Hey guys, I found that REDLINE 75w85 LS is fully compatible with BMW G4 diff fluid spec but what so you think of filling rear M-sport differential with REDLINE 75w90 LS ?

BUMP

[dhock_holiday]

Originally Posted by MattEcho

Hey y'all, just wanted to share a few quick notes on the fluid change I just completed on my 2021 rear diff.

1. BMW uses one plug for the drain and fill. Which means that they expect you to suction out the fluid. Well, I (like a lot of people I'm sure) used the temp sensor plug to drain the fluid. While not a perfect solution, it gets most of the old fluid out.

2. This was the first fluid change at 20k miles. The fluid was black and very grainy. I'm glad I did it, but wished I had done it earlier.

2. Be careful of reinstalling the temp sensor, I broke mine by over-torquing. Had to get another from local BMW dealer, which was priced at twice I could get online. But then, I wanted it asap to finish the job, ugh.

3. Needed 3 bottles of the 500ml G4 fluid from dealer. So like $180 for three bottles. If I was more careful with spillage and not breaking the sensor, I probably would've only needed 2 bottles.

4. Overall pretty easy and now just waiting on BMW to supply everybody with the G5 fluid so I can do the front diff. Supposedly mid July now, but they keep pushing dates.

What’s the torque spec on the sensor?

[MattEcho]

Originally Posted by dhock_holiday

What’s the torque spec on the sensor?

14nm