Leaking Differential

Mr. BMW · 10-22-2018, 07:12 AM

Hey Guys,

I've noticed a couple times now there's some oil stain the ground around the rear diff area and I finally took a look under the car this weekend. I see some oil leaking around the front of the diff. Looking from the back of the car I don't see any leakage.

Anyone else have this issue? I'm wondering if the warranty i just purchased will cover the repair.

And yes I did a search and didn't find anything related to diff leakage.

nrubenstein · 10-22-2018, 09:07 AM

Pinion seal. I haven't looked at the E9x procedure specifically, but not typically a big deal. Typically a $20 part, but a bunch of labor to get to. (Have to drop the exhaust and pull the driveshaft. You can generally pull the flange with the diff on the car.)

If your warranty covers drivetrain components, they ought to cover it.

Mr. BMW · 10-22-2018, 10:23 AM

Quote:

Originally Posted by nrubenstein

Pinion seal. I haven't looked at the E9x procedure specifically, but not typically a big deal. Typically a $20 part, but a bunch of labor to get to. (Have to drop the exhaust and pull the driveshaft. You can generally pull the flange with the diff on the car.)

If your warranty covers drivetrain components, they ought to cover it.

Yeah, I called the warranty company and they said it should be covered.

I have an appointment at the dealer next Monday.

I should still be OK to drive it? I don't see a lot of oil on the ground.

Mvy · 10-22-2018, 11:25 AM

As long as you have not lost enough or are gushing fluid enough to put the diff into a low lubricant scenario, you are fine to drive with a slow steady drip.

Mr. BMW · 10-29-2018, 03:05 PM

So the dealer told me it's the seal at the front where the driveshaft goes. I guess that's the Pinion seal.

Should I have them change the diff fluid while they are doing this? He told me they don't have to drain it. Just top it off but does it make sense to just do it while they are in there? I have around 34K miles on the car.

WingZeroX5 · 10-29-2018, 06:34 PM

Quote:

Originally Posted by Mr. BMW

So the dealer told me it's the seal at the front where the driveshaft goes. I guess that's the Pinion seal.

Should I have them change the diff fluid while they are doing this? He told me they don't have to drain it. Just top it off but does it make sense to just do it while they are in there? I have around 34K miles on the car.

If it's never changed, it's a good idea. It's a simple procedure of drain and fill. A lot of folks here use redline, takes two bottles

GORDON.M3 · 10-30-2018, 02:43 PM

It's fine. If its sweating and you don't see a puddle on the floor of oil, there is plenty of oil still in the unit and very well safe to drive.
Just get to service it as soon as possible.

Mr. BMW · 10-31-2018, 09:17 AM

It's fixed. Here is a list of parts:
33 12 1 213 949 B1-Shaft seal
33 12 1 205 138 B1RRSA Securing plate
88 22 2 357 992 BOB1-SAF-xj (diff fluid)

Parts $100
Labor $450
Covered by my Ally Major Guard Warranty - $100 deductible.

10-22-2018, 07:12 AM	#1
Mr. BMW Major 262 Rep 1,389 Posts Drives: 2012 E92 M3 Join Date: Feb 2006 Location: MA iTrader: (0) Garage List 2012 M3 [0.00] 2006 330i [0.00] 2018 Jeep Grand Che ... [0.00]	Leaking Differential Hey Guys, I've noticed a couple times now there's some oil stain the ground around the rear diff area and I finally took a look under the car this weekend. I see some oil leaking around the front of the diff. Looking from the back of the car I don't see any leakage. Anyone else have this issue? I'm wondering if the warranty i just purchased will cover the repair. And yes I did a search and didn't find anything related to diff leakage. __________________ 12 M3 Interlagos Blue/Black 18 Jeep Grand Cherokee (Yeah, it's got a HEMI) 21 X3 Silver/Black(Wife's) 06 330i Monaco Blue/Black (retired) 02 X5 3.0 Topaz Blue/Black (retired)
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10-22-2018, 09:07 AM	#2
nrubenstein Captain 567 Rep 801 Posts Drives: E30 M3/E36 M3/E46 M3/E90 M3 Join Date: Dec 2016 Location: Washington, DC iTrader: (2)	Pinion seal. I haven't looked at the E9x procedure specifically, but not typically a big deal. Typically a $20 part, but a bunch of labor to get to. (Have to drop the exhaust and pull the driveshaft. You can generally pull the flange with the diff on the car.) If your warranty covers drivetrain components, they ought to cover it. __________________ 2011.75 E90 M3 \| 2006 GMC Sierra LBZ \| 2004 X5 3.0i 6MT \| 1995 M3 S50B32 \| 1990 325is \| 1989 M3 S54B32 Hers: 1996 911 Turbo \| 1989 325iX
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10-22-2018, 11:25 AM	#4
Mvy Captain 541 Rep 979 Posts Drives: 2008 E93 M3 Join Date: Nov 2014 Location: GA Peach iTrader: (0)	As long as you have not lost enough or are gushing fluid enough to put the diff into a low lubricant scenario, you are fine to drive with a slow steady drip. __________________ Harrop Supercharger, BPM Tune, K/W Coil over kit, Stoptek BBK, Magnaflow exhaust, ear to ear grin everytime I drive...
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10-29-2018, 03:05 PM	#5
Mr. BMW Major 262 Rep 1,389 Posts Drives: 2012 E92 M3 Join Date: Feb 2006 Location: MA iTrader: (0) Garage List 2012 M3 [0.00] 2006 330i [0.00] 2018 Jeep Grand Che ... [0.00]	So the dealer told me it's the seal at the front where the driveshaft goes. I guess that's the Pinion seal. Should I have them change the diff fluid while they are doing this? He told me they don't have to drain it. Just top it off but does it make sense to just do it while they are in there? I have around 34K miles on the car. __________________ 12 M3 Interlagos Blue/Black 18 Jeep Grand Cherokee (Yeah, it's got a HEMI) 21 X3 Silver/Black(Wife's) 06 330i Monaco Blue/Black (retired) 02 X5 3.0 Topaz Blue/Black (retired)
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10-30-2018, 02:43 PM	#7
GORDON.M3 Brigadier General 1423 Rep 3,001 Posts Drives: E92 M3 • F25 X3 M-Sport Join Date: Dec 2013 Location: LAX/YYZ/NRT iTrader: (11)	It's fine. If its sweating and you don't see a puddle on the floor of oil, there is plenty of oil still in the unit and very well safe to drive. Just get to service it as soon as possible. __________________ INSTAGRAM: GORDON.M3 North American Mr12Volt Carplay/Android Auto Distributor DINAN \| EVOSPORT \| VAC \| ARP \| RD SPORT \| NEEZ \| EIBACH \| CSF \| IND \| BILSTEIN \| KLASSEN \| BREMBO \| ENDLESS \| BBS \| BPM SPORT \| PROJECT MU \| EVENTURI
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10-31-2018, 09:17 AM	#8
Mr. BMW Major 262 Rep 1,389 Posts Drives: 2012 E92 M3 Join Date: Feb 2006 Location: MA iTrader: (0) Garage List 2012 M3 [0.00] 2006 330i [0.00] 2018 Jeep Grand Che ... [0.00]	It's fixed. Here is a list of parts: 33 12 1 213 949 B1-Shaft seal 33 12 1 205 138 B1RRSA Securing plate 88 22 2 357 992 BOB1-SAF-xj (diff fluid) Parts $100 Labor $450 Covered by my Ally Major Guard Warranty - $100 deductible. __________________ 12 M3 Interlagos Blue/Black 18 Jeep Grand Cherokee (Yeah, it's got a HEMI) 21 X3 Silver/Black(Wife's) 06 330i Monaco Blue/Black (retired) 02 X5 3.0 Topaz Blue/Black (retired)
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