Leaking rear diff - BMW 3-Series (E90 E92) Forum

Foreman05 · 01-14-2013, 11:05 PM

Does this look familiar? the search didn't turn up to much info. Any thoughts on where its leaking or have you had the same issue? the pic is from the right side of the diff (passenger side). I looked at real oem it looks like it may be # 13?
http://realoem.com/bmw/diagrams/c/f/135.png

Phil325i · 01-15-2013, 08:14 AM

Looking at your pics I'd say 'leak' was overstating it. More like a very small weep over a long period of time. If it was mine I would check the fluid level then clean down the housing and see if it re-appears.

Johnny D · 01-15-2013, 10:31 AM

If there is a leak, yes it would be #13 you want to replace. However, I would suggest changing the fluid so you know it was full and then cleaning the area that looks to be leaking. Drive for another few weeks to see if it returns.

Foreman05 · 01-15-2013, 12:31 PM

Thanks guys that seems like a easier solution, i hope its just weeping. Any diff oil you would recommend? I seen some talk about redline but i cant find it around here.

Johnny D · 01-15-2013, 02:59 PM

Quote:

Originally Posted by Foreman05

Thanks guys that seems like a easier solution, i hope its just weeping. Any diff oil you would recommend? I seen some talk about redline but i cant find it around here.

Redline is great, but usually has to be ordered. I use Mobil 1 on my e90 and e30.

Phil325i · 01-15-2013, 06:15 PM

Here you go...

http://xom.ee/files/62_glxxencvlmomo...shc_75w-90.pdf

01-14-2013, 11:05 PM	#1
Foreman05 Private First Class Drives: 06 330i Join Date: Jul 2011 Location: NC Posts: 133 iTrader: (1)	Leaking rear diff Does this look familiar? the search didn't turn up to much info. Any thoughts on where its leaking or have you had the same issue? the pic is from the right side of the diff (passenger side). I looked at real oem it looks like it may be # 13? http://realoem.com/bmw/diagrams/c/f/135.png Attached Images
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01-15-2013, 08:14 AM	#2
Phil325i Lieutenant Drives: E92 325i MSport Coupe Join Date: Apr 2012 Location: UK South East Posts: 570 iTrader: (0) Garage List 2009 BMW 325i Coupe [0.00]	Looking at your pics I'd say 'leak' was overstating it. More like a very small weep over a long period of time. If it was mine I would check the fluid level then clean down the housing and see if it re-appears. __________________ E92 pre-LCI 325i - Ohlins R&T; H&R spacers; BMS clutch stop; BMS CDV; RE g/box mounts; Saikoumichi OCC; K&N; Cyba scoops; BMW Perf Exhaust; M3 rear spoiler; LED Angels; BMW Perf black grille; SSDD carbon diffuser; Monster Wrap black roof

01-15-2013, 10:31 AM	#3
Johnny D Major Drives: 2006 BMW 325i Join Date: Apr 2011 Location: Hot Springs, AR Posts: 1,078 iTrader: (4) Garage List 2006 BMW 325i [4.60]	If there is a leak, yes it would be #13 you want to replace. However, I would suggest changing the fluid so you know it was full and then cleaning the area that looks to be leaking. Drive for another few weeks to see if it returns. __________________

01-15-2013, 06:15 PM	#6
Phil325i Lieutenant Drives: E92 325i MSport Coupe Join Date: Apr 2012 Location: UK South East Posts: 570 iTrader: (0) Garage List 2009 BMW 325i Coupe [0.00]	Here you go... http://xom.ee/files/62_glxxencvlmomo...shc_75w-90.pdf __________________ E92 pre-LCI 325i - Ohlins R&T; H&R spacers; BMS clutch stop; BMS CDV; RE g/box mounts; Saikoumichi OCC; K&N; Cyba scoops; BMW Perf Exhaust; M3 rear spoiler; LED Angels; BMW Perf black grille; SSDD carbon diffuser; Monster Wrap black roof

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01-15-2013, 12:31 PM	#4
Foreman05 Private First Class Drives: 06 330i Join Date: Jul 2011 Location: NC Posts: 133 iTrader: (1)	Thanks guys that seems like a easier solution, i hope its just weeping. Any diff oil you would recommend? I seen some talk about redline but i cant find it around here.