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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > "Rear differential is seeping fluid near right drive flange"



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      06-23-2015, 10:15 AM   #1
bvanderhaar
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"Rear differential is seeping fluid near right drive flange"

This was noted on my most recent service invoice. Looking at RealOEM:
http://www.realoem.com/bmw/enUS/show...diagId=33_1250

Is #13 and #14 the ones that need replacement? Is this a hard DIY? The service advisor told me it's not bad....should I just leave it and check the oil levels/change the oil more often?

I found this via a google search - sounds like the dealer just replaces the whole diff?
http://www.zpost.com/forums/showthread.php?t=524602
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      06-27-2015, 09:30 AM   #2
Efthreeoh
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Diff leaks like that look far worse than they really are. Over tens of thousands of miles you'll not loose much fluid.
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A manual transmission can be set to "comfort", "sport", and "track" modes simply by the technique and speed at which you shift it; it doesn't need "modes", modes are for manumatics that try to behave like a real 3-pedal manual transmission. If you can money-shift it, it's a manual transmission.
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      07-06-2015, 08:18 PM   #3
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Thank you for responding. I won't worry for now.
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      07-07-2015, 08:07 AM   #4
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Quote:
Originally Posted by bvanderhaar View Post
Thank you for responding. I won't worry for now.
When was the last time you changed the gear oil? After time the lube will start breaking down getting thinner and thinner causing some seepage.
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      07-12-2015, 12:22 AM   #5
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Quote:
Originally Posted by Greyfox View Post
When was the last time you changed the gear oil? After time the lube will start breaking down getting thinner and thinner causing some seepage.
I haven't changed it. 92k miles. I plan to change the oil in both diffs in the fall.
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