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E46 Xi Forum
The E46 XI was produced from 01-05 in sedan and touring body styles. Powered by either a 2.5L inline 6 in the 325xi or a 3.0L inline 6 330xi. Discuss all thing about BMW AWD E46 'Xi' here.

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Old 11-05-2010, 02:10 PM   #1
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Join Date: Nov 2009
Location: Indiana Bloomington
Posts: 9
My Ride: 2003 325xi
oil leak from underbody

Dear friends~~~

I have a problem with oil leaking underside of my car.
My indy shop manager told me that it must be related to the power steering fluid, however, he cannot also recognize which part he needs to order to replace it.
The picture will show you the two high pressure hose (red arrow) which are leaking now.
Does anyone have any idea what these lines are?

Thank you for any comment.
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Old 11-05-2010, 03:07 PM   #2
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Join Date: Oct 2010
Location: Minnesnowta
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My Ride: 4cyl of fury
No idea, but it looks like BP was at work under your car....
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Old 11-05-2010, 10:55 PM   #3
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Location: EastCoast
Posts: 367
My Ride: 2003 325XI
Could be your oil filter housing seal leaking. If you search you will find DIY. It will soak your front diff....
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Old 11-06-2010, 07:07 AM   #4
ferngreen 325xi
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Join Date: Aug 2006
Location: Moved to San Diego
Posts: 98
My Ride: 2001 325XI wagon.
Those lines with the red arrows run from the automatic transmission to the heat exchanger in the radiator.
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Old 11-08-2010, 07:57 AM   #5
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Join Date: Apr 2009
Location: New Orleans
Posts: 366
My Ride: 2003 325.xit
its the oil filter housing seal...Mine is doing it now, I wil be replacing it this weekend. its only a $4 part from pelican. I advise you to get a new alternator belt also. Its worth the while to have it replaced while down there.
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