Diff leak

Mr. C4 · 09-06-2018, 01:15 AM

Guys,

Had my car (328i F31) on a lift the other day and observed that the diff was wet. It looks fresh to me as it would otherwise have been more dirt collected on the wet area. Any ideas from where it is leaking (drive or prop shaft side)? Looks like seal from prop side to me. Is this common on the F series?

Going in to the dealership on 14th under warranty.

Thanks, JE

M2_MEDUSA · 09-06-2018, 01:18 AM

Quote:

Originally Posted by Mr. C4

Guys,

Had my car (328i F31) on a lift the other day and observed that the diff was wet. It looks fresh to me as it would otherwise have been more dirt collected on the wet area. Any ideas from where it is leaking (drive or prop shaft side)? Looks like seal from prop side to me. Is this common on the F series?

Going in to the dealership on 14th under warranty.

Thanks, JE

Never seen keep us updated

KGB_123_99 · 09-08-2018, 08:21 AM

I had the same thing on my previous car. It was coming from the side seal. See post:

https://f30.bimmerpost.com/forums/sh....php?t=1108145

cfm56d7b · 09-08-2018, 11:15 AM

OP, what year is your vehicle? How many miles?

Mr. C4 · 09-08-2018, 03:35 PM

Quote:

Originally Posted by cfm56d7b

OP, what year is your vehicle? How many miles?

2013, 85000 km

cfm56d7b · 09-08-2018, 03:48 PM

Glad to see that this repair will be under warranty. Is it original factory or CPO?

Mr. C4 · 09-09-2018, 12:39 AM

Actually it is an optional 3rd party insurance for used cars with a 6 month validity offered to the buyer. I am very pleased that I opted for this at a cost of USD 130 for 6 months and with a deductible of USD 100.

Mr. C4 · 09-15-2018, 03:51 PM

Quote:

Originally Posted by IssaF32

Quote:

Originally Posted by Mr. C4

Guys,

Had my car (328i F31) on a lift the other day and observed that the diff was wet. It looks fresh to me as it would otherwise have been more dirt collected on the wet area. Any ideas from where it is leaking (drive or prop shaft side)? Looks like seal from prop side to me. Is this common on the F series?

Going in to the dealership on 14th under warranty.

Thanks, JE

Never seen keep us updated

Car was in and out at the dealer workshop yesterday. All three diff seals replaced. Parts and labor costs equiv to USD 1000, so I am very pleased that I had my optional 6 month warranty/insurance with a premium/deductible of equiv to USD 130/100.......

Noelified · 09-18-2018, 08:54 AM

I have same thing. I was under there installing AWE exhaust last week and noticed. Was just in for service and full check too, strange they didn't find this or think it's ok. MY16 48,000 miles, under CPO Elite until 75k so I should be covered.

Mr. C4 · 09-19-2018, 02:14 AM

Quote:

Originally Posted by Noelified

I have same thing. I was under there installing AWE exhaust last week and noticed. Was just in for service and full check too, strange they didn't find this or think it's ok. MY16 48,000 miles, under CPO Elite until 75k so I should be covered.

Good that you have that CPO Elite, should be covered. My dealer felt that my injectors were noisier than average and I might get them changed under the same warranty but subject to insurance company's approval. Fingers crossed…...

Noelified · 09-19-2018, 08:06 AM

Quote:

Originally Posted by Mr. C4

Good that you have that CPO Elite, should be covered. My dealer felt that my injectors were noisier than average and I might get them changed under the same warranty but subject to insurance company's approval. Fingers crossed…...

I don't see why not. I'd say, get your SA or technician to test the injectors as "faulty" then there is no argument to make, right? Good for you to find a service place that looks forward like that.

Polo08816 · 12-03-2018, 08:43 AM

https://www.newtis.info/tisv2/a/en/f...drive/H01JhHKZ

Seems like this may require special tools to accomplish?

IraHayes · 12-03-2018, 08:09 PM

Quote:

Originally Posted by Polo08816

https://www.newtis.info/tisv2/a/en/f...drive/H01JhHKZ

Seems like this may require special tools to accomplish?

Wow! And it’s not like one or two either. Why am I not surprised?

D041987 · 12-04-2018, 04:53 PM

Get a pair of pry bars to pop it off as it is just a push in and not too much force is needed and to push it back in you need to undo the big axle nut and tap it in with a hammer. Save you the $500 in tools that only you can get from GetBMW parts as no one else makes them!

IraHayes · 12-04-2018, 10:32 PM

Quote:

Originally Posted by D041987

Get a pair of pry bars to pop it off as it is just a push in and not too much force is needed and to push it back in you need to undo the big axle nut and tap it in with a hammer. Save you the $500 in tools that only you can get from GetBMW parts as no one else makes them!

This is sage advice. I’ve rebuilt a couple rear ends in my life. They were on solid axle cars, but I’m sure this wouldn’t too terribly different, and I didn’t need special tools.

09-06-2018, 01:15 AM	#1
Mr. C4 Second Lieutenant 241 Rep 222 Posts Drives: E90 M3, 328i Touring M Sport Join Date: Jun 2018 Location: Sweden iTrader: (0)	Diff leak Guys, Had my car (328i F31) on a lift the other day and observed that the diff was wet. It looks fresh to me as it would otherwise have been more dirt collected on the wet area. Any ideas from where it is leaking (drive or prop shaft side)? Looks like seal from prop side to me. Is this common on the F series? Going in to the dealership on 14th under warranty. Thanks, JE Attached Images
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09-08-2018, 08:21 AM	#3
KGB_123_99 Captain 404 Rep 962 Posts Drives: '17 330ix M-Sport, '09 528ix Join Date: Apr 2014 Location: Montreal, QC iTrader: (0)	I had the same thing on my previous car. It was coming from the side seal. See post: https://f30.bimmerpost.com/forums/sh....php?t=1108145
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09-08-2018, 11:15 AM	#4
cfm56d7b Lieutenant General 5886 Rep 10,256 Posts Drives: 2017 440i Gran Coupe & 2015 X5 Join Date: Nov 2012 Location: Orange County, CA iTrader: (2)	OP, what year is your vehicle? How many miles?
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09-08-2018, 03:48 PM	#6
cfm56d7b Lieutenant General 5886 Rep 10,256 Posts Drives: 2017 440i Gran Coupe & 2015 X5 Join Date: Nov 2012 Location: Orange County, CA iTrader: (2)	Glad to see that this repair will be under warranty. Is it original factory or CPO?
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09-09-2018, 12:39 AM	#7
Mr. C4 Second Lieutenant 241 Rep 222 Posts Drives: E90 M3, 328i Touring M Sport Join Date: Jun 2018 Location: Sweden iTrader: (0)	Actually it is an optional 3rd party insurance for used cars with a 6 month validity offered to the buyer. I am very pleased that I opted for this at a cost of USD 130 for 6 months and with a deductible of USD 100.
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09-18-2018, 08:54 AM	#9
Noelified First Lieutenant 228 Rep 325 Posts Drives: 2016 F36 Join Date: Mar 2017 Location: CT iTrader: (0) Garage List 2016 BMW 428ix F36 GC [0.00]	I have same thing. I was under there installing AWE exhaust last week and noticed. Was just in for service and full check too, strange they didn't find this or think it's ok. MY16 48,000 miles, under CPO Elite until 75k so I should be covered. Attached Images __________________ ◊ 2016 F36 xDrive N26 ◊ Black Sapphire Metallic ⁞ Dakota Black ◊ ║ VRSF HD FMIC ║ ER DP custom paint ║ AWE cat back Exhaust Suite ║ NGK Plugs ║Bootmod3 Stage 1 93 ║ GFB DV+ ║ BMS 10mm Front ⁞ 12mm Rear Spacers ║ P Style BSM Rear Spoiler ║ Smoked Front Reflectors ║ Madico Onyx 20 Tint ║ LCI Lighted Trim Bezel ║ Opti-Coat Pro+ ║
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12-03-2018, 08:43 AM	#12
Polo08816 Brigadier General 1610 Rep 3,947 Posts Drives: 2014 335i M Sport Join Date: Sep 2010 Location: MD iTrader: (0)	https://www.newtis.info/tisv2/a/en/f...drive/H01JhHKZ Seems like this may require special tools to accomplish?
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12-04-2018, 04:53 PM	#14
D041987 Big Turbo Boys N Girls 327 Rep 579 Posts Drives: 2012 328I 6speed Join Date: Apr 2016 Location: Lynnwood, WA iTrader: (0)	Get a pair of pry bars to pop it off as it is just a push in and not too much force is needed and to push it back in you need to undo the big axle nut and tap it in with a hammer. Save you the $500 in tools that only you can get from GetBMW parts as no one else makes them! __________________ 2012 F30: G25-660 Bottom Mount Mani+ DP+ Intake, CSF FMIC, VRSF CP, Walbro 450 LPFP, PR Injection with AIC 4, S63TU Injectors, Tuned with BM3, ZF Race 4 Puck and Non SSA Pressure plate, Catless, 3.5" Quad Muffler, Custom Valved Bilstein B8 + H&R SS. Max 456 WHP - 452 WTRQ. Currently tuned down to 434 WHP and 362 WTRQ to save the rods.
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