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#1
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Came back from a road trip and puddle on the right side engine bay. Diff Seal Leak?
This car was a recent purchase in April, and I had the dealer replace the front + rear diff fluid before delivering to me. Could all this fluid have suddenly leaked out of the shaft seal? My only concern is that I thought diff fluid smelled terrible, but this didn't smell too bad. The liquid was slick and gold-ish. Does anyone have any experience with this? I'm pretty sure it's that shaft seal but wanted to check with everyone here. I'm thinking it's Part #7 in this realoem diagram. https://www.realoem.com/bmw/enUS/sho...diagId=31_0514 Pics of the leak below. https://imgur.com/a/ljEdQex
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E53 X5 3.0i 6MT E90 328i 3.0i Auto 987.1 Cayman 5MT |
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#2
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Pic doesn't seem to be loading. Love the no oil change note on realoem too
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Daily Drivers: - 2008 535i, 290,000km - 2004 X5 4.4, 01/2004 production, 380,000km - 1998 328i, 370,000km Track: - 1996 328i, track/race car, ~300,000km Winter: - 2013 Ski-Doo MXZ X 800 E-TEC, trail can - 2001 Ski-Doo MXZ 600 w/800 engine, exhaust - 1978 Ski-Doo Olympique 340 (vintage race sled) - 1977 Ski-Doo Olympique 340E |
#3
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The 3 pics in the imgur link aren't working? That's weird. I'll find a different host.
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E53 X5 3.0i 6MT E90 328i 3.0i Auto 987.1 Cayman 5MT Last edited by Tooshay; 06-23-2021 at 10:30 PM. |
#4
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- You can upload jpegs to this forum. Just click on "Manage Attachments" icon.
- Best is to clean the oil leak, then monitor it daily. Maybe it was overfilled?
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1998 E39 528i 5sp MT 2006 E53 X5 3.0 6sp MT |
#5
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Oh nice! I didn't know I could do jpg directly. I clicked on the Insert Image button but it only asks for a URL.
I'm just kind of suprised this leak came out of nowhere. Like a 6 inch diameter puddle of a leak when it was previously leak free. I looked more closely under the car and I'm pretty sure it's the Diff Axle Seal, but wow it went from no leak to pretty bad leak so quickly.
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E53 X5 3.0i 6MT E90 328i 3.0i Auto 987.1 Cayman 5MT |
#6
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My first thought is PS if you don't have oil coming out the filter housing. Use a very bright light and shine in under/ around the oil filter housing.
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
#7
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Pretty sure there's no fluid inside the shaft housing to leak out.... so likely to be something above the shaft housing.
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Wayne 2005 BMW X5 3.0d (b 02/05) 2001 BMW F650GS Dakar (b 06/01) |
#8
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Quote:
There has to be fluid right? I've seen posts about diff fluid leaking out of the O-ring (Part #8 in the diagram). If that O-ring is sealing fluid, than the part #7 must be sealing something too.
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E53 X5 3.0i 6MT E90 328i 3.0i Auto 987.1 Cayman 5MT |
#9
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Quote:
I'm thinking leak from a PS hose under. Also leak from the OFHG can come down the front and leak out anywhere. (due to stiffening plate). Look in under the oil filter cap and makes sure no oil there. You can check fluid level in the dif if concerned it's leaking from there but dif won't likely make a puddle they aren't filled above the output shafts you get dribbles usually.
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
#10
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Quote:
I'll take a closer look later today at the OFHG and report back on that though! If it was PS the fluid would be more of a red-tint though right? I checked my PS reservoir and the fluid level seems fine.
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E53 X5 3.0i 6MT E90 328i 3.0i Auto 987.1 Cayman 5MT |
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