The general idea of changing rear differential fluid is to: 1. Jack up the vehicle, ensure it is leveled 2. Remove Fill Plug first 3. Remove Drain Plug after or 3. Siphon the old fluid out from the Fill Plug via a hook-shaped adapter, or a flexible hose 4. Pump the new fluid until it overflows from the fill hole 5. Wait for a couple of minutes until the overflow calms down and becomes dripping 6. Install a new Fill Plug 7. Lower the vehicle to the ground, start the vehicle to ensure there is no fault code 8. Go around the block, double-check to ensure there is no leak from both the Fill Plug and the Drain Plug -------------------- Tools Required (BMW M340i RWD & AWD & Supra MK5 A90/A91 & 40i with Limited Slip Rear Differential): - Jack & Jack Stands (or Wood Blocks) - Wheel Chocks - 14mm Hex Socket (Fill Plug) - 17mm Deep Socket (Temp Sensor) - Torque Wrench, that can do 14 Nm & 60 Nm respectively - Any type of fluid transfer pump - Hook-Shaped Hose Adapter or Flexible Hose - Disposable Gloves -------------------- Torque Spec: - Fill Plug: 60 Nm - Temperature Sensor: 14 Nm (Supra manual asks for 13.5 Nm) -------------------- Your support means the world to me. If you like the video, please give it a thumbs-up, share it with your friends who need this, and subscribe to my channel! By no means am I a professional mechanic, I am also trying to learn as I go, and to learn from my mistakes. If you do have any input or question, please feel free to drop them in the comments. I will try to address them as best as I can.
I really appreciate your kind words! Yes, I do plan on doing that in the soon future, along with transmission fluid! I already have the fluid sitting in my garage, but life got in the way lol. I’ll try to get them done and edit the videos ASAP! 😉
@@TandeGaragedid you ever get around to the front differential video? Also were you planning on doing the transfer case fluid as well? Really liked the video and your thorough explanations. Well done sir!
@@chrisb7161 Appreciate it - and I have! Both the front diff fluid & transfer case fluid change are already posted under this same channel. Check out my How-To playlist for everything I've done so far!
hi! great video! thanks for sharing the knowledge. question: is it really necessary to buy 3 botlles of the fluid? how much did you actually end up using? I've read some people were able to use 700-900ml of the new fluid only...
Thank you for the kind words, appreciate you too! I’m almost willing to bet, those people siphoned the old fluid from the fill plug, not knowing the temp sensor can be taken out and act as a drain. As far as the volume of fluid goes, I don’t think it’s necessary to get 3 bottles, but I’d recommend it.
You have to be so careful filling this thing. I didn’t let it drip out all the way and it started shuttering, then I drained it out when it was hot and I started hearing grinding, opened it back up and put oil back in and now no noise thank god! But must let it drip out completely. Because if not that’s when you get trouble.
@ don’t over fill, I have run it to allot of problems because of it. I didn’t let it drain out completely. And it started shuttering, then I drain it out but while it was hot. I took out to much, then I heard grinding once in a while when I would make a rite turn only. So then I re open and put more oil an waited till it came to a slow dribble. Then closed it. Now no grinding but it makes a small shutter ever once in a wile. I just might re open and do it all over again. I used to do this to my Honda pilot, it was no big deal but this car is something else.
@@highendtrends3508 I’ve only heard of overfilling could cause excessive vent under high-stress scenarios, such as launching. It’ll look like a leak from the top of the diff cover. Never have I heard of it being an issue that could cause drivability concern, though I can imagine it happens. It’s about my 6th diff fluid change on BMWs, and I always leave it till a steady dribble then to close off the fill plug. Never have an issue so far going with that method. Good point though, and I’ll keep that in mind!
I got the fluid from the dealership - be mindful that they are fairly limited stock. Call them before going there to realize they don’t have any in stock. The pump I just got off Amazon! I’m not yet an Amazon associate so I don’t want to post link (just yet). But read the reviews and buy one that has great feedback from users, then you should be all set 😉
These cars have pretty solid rear differential, other than being a leaky sweaty one 😅 That sounds more like suspensiom issue. I’d check your struts for hydraulic fluid leaks, endlinks for play, the easy and obvious stuff and start from there.
To be honest, no noticeable difference before and after. But IMO that’s a good thing , it simply means the rear differential was not having any problem before changing fluid.
Hello! please answer me one question. I purchased rear differential oil for a BMW M340i hypoid axle oil g4. This oil was previously green in color and had a viscosity of about 75W-80. Now the oil is yellow in color and its viscosity is somewhere around 75W-140. Can you tell me if this is how it should be? I can't find information anywhere... Could it be a fake…?
I don’t really have a thorough answer for you, unfortunately. But speaking from experience while doing the video, the genuine BMW Hypoid G4 fluid should be in green-ish color (I bought from a local reputable dealership). Can’t really tell its viscosity though. However, the rear diff fluid I changed on my F30 (open rear diff) was yellow/gold in color. I want to assume that’s probably what you got, which is not compatible with our limited slip rear diff. Yet again I cannot be sure. Hope this answers at least a fair bit of your question, and that you will find a compatible fluid for your application!
The general idea of changing rear differential fluid is to:
1. Jack up the vehicle, ensure it is leveled
2. Remove Fill Plug first
3. Remove Drain Plug after
or
3. Siphon the old fluid out from the Fill Plug via a hook-shaped adapter, or a flexible hose
4. Pump the new fluid until it overflows from the fill hole
5. Wait for a couple of minutes until the overflow calms down and becomes dripping
6. Install a new Fill Plug
7. Lower the vehicle to the ground, start the vehicle to ensure there is no fault code
8. Go around the block, double-check to ensure there is no leak from both the Fill Plug and the Drain Plug
--------------------
Tools Required (BMW M340i RWD & AWD & Supra MK5 A90/A91 & 40i with Limited Slip Rear Differential):
- Jack & Jack Stands (or Wood Blocks)
- Wheel Chocks
- 14mm Hex Socket (Fill Plug)
- 17mm Deep Socket (Temp Sensor)
- Torque Wrench, that can do 14 Nm & 60 Nm respectively
- Any type of fluid transfer pump
- Hook-Shaped Hose Adapter or Flexible Hose
- Disposable Gloves
--------------------
Torque Spec:
- Fill Plug: 60 Nm
- Temperature Sensor: 14 Nm (Supra manual asks for 13.5 Nm)
--------------------
Your support means the world to me. If you like the video, please give it a thumbs-up, share it with your friends who need this, and subscribe to my channel!
By no means am I a professional mechanic, I am also trying to learn as I go, and to learn from my mistakes. If you do have any input or question, please feel free to drop them in the comments. I will try to address them as best as I can.
Damn bro she dirty down there
Sabes x que apárese el testigo diferencial trasero limitado
Almost time to do this myself!
It’s really as easy as it seems, you can do this!!
Thank you so much for the video! You're awesome🥹 do you also change front diff fluid as well?
I really appreciate your kind words! Yes, I do plan on doing that in the soon future, along with transmission fluid!
I already have the fluid sitting in my garage, but life got in the way lol. I’ll try to get them done and edit the videos ASAP! 😉
@@TandeGaragedid you ever get around to the front differential video? Also were you planning on doing the transfer case fluid as well? Really liked the video and your thorough explanations. Well done sir!
@@chrisb7161 Appreciate it - and I have! Both the front diff fluid & transfer case fluid change are already posted under this same channel.
Check out my How-To playlist for everything I've done so far!
hi! great video! thanks for sharing the knowledge. question: is it really necessary to buy 3 botlles of the fluid? how much did you actually end up using? I've read some people were able to use 700-900ml of the new fluid only...
Thank you for the kind words, appreciate you too!
I’m almost willing to bet, those people siphoned the old fluid from the fill plug, not knowing the temp sensor can be taken out and act as a drain.
As far as the volume of fluid goes, I don’t think it’s necessary to get 3 bottles, but I’d recommend it.
You have to be so careful filling this thing. I didn’t let it drip out all the way and it started shuttering, then I drained it out when it was hot and I started hearing grinding, opened it back up and put oil back in and now no noise thank god! But must let it drip out completely. Because if not that’s when you get trouble.
Hey!
Are you saying to drain the old fluid out all the way, or are you saying not to overfill the rear diff?
@ don’t over fill, I have run it to allot of problems because of it. I didn’t let it drain out completely. And it started shuttering, then I drain it out but while it was hot. I took out to much, then I heard grinding once in a while when I would make a rite turn only. So then I re open and put more oil an waited till it came to a slow dribble. Then closed it. Now no grinding but it makes a small shutter ever once in a wile. I just might re open and do it all over again. I used to do this to my Honda pilot, it was no big deal but this car is something else.
@@highendtrends3508 I’ve only heard of overfilling could cause excessive vent under high-stress scenarios, such as launching. It’ll look like a leak from the top of the diff cover. Never have I heard of it being an issue that could cause drivability concern, though I can imagine it happens.
It’s about my 6th diff fluid change on BMWs, and I always leave it till a steady dribble then to close off the fill plug. Never have an issue so far going with that method.
Good point though, and I’ll keep that in mind!
Can you pls link the items?
Where did you order the oil?
Where I can get those pumping syringes ?lol
I got the fluid from the dealership - be mindful that they are fairly limited stock. Call them before going there to realize they don’t have any in stock.
The pump I just got off Amazon! I’m not yet an Amazon associate so I don’t want to post link (just yet). But read the reviews and buy one that has great feedback from users, then you should be all set 😉
@@TandeGarage thank you for quick response, new subscriber earned!
On my g20 m340i on low speeds when turning i hear a clunk sound from the rear. Any ideas
These cars have pretty solid rear differential, other than being a leaky sweaty one 😅
That sounds more like suspensiom issue. I’d check your struts for hydraulic fluid leaks, endlinks for play, the easy and obvious stuff and start from there.
Great video, the fluid looked pretty dirty. Does it feel any different now with fresh fluid?
To be honest, no noticeable difference before and after. But IMO that’s a good thing , it simply means the rear differential was not having any problem before changing fluid.
Hello! please answer me one question. I purchased rear differential oil for a BMW M340i hypoid axle oil g4. This oil was previously green in color and had a viscosity of about 75W-80. Now the oil is yellow in color and its viscosity is somewhere around 75W-140. Can you tell me if this is how it should be? I can't find information anywhere... Could it be a fake…?
I don’t really have a thorough answer for you, unfortunately. But speaking from experience while doing the video, the genuine BMW Hypoid G4 fluid should be in green-ish color (I bought from a local reputable dealership). Can’t really tell its viscosity though.
However, the rear diff fluid I changed on my F30 (open rear diff) was yellow/gold in color. I want to assume that’s probably what you got, which is not compatible with our limited slip rear diff. Yet again I cannot be sure.
Hope this answers at least a fair bit of your question, and that you will find a compatible fluid for your application!
@@TandeGarage Thank you so much!