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7 Series - E38 (1995 - 2001)

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  #1  
Old 10-08-2012, 10:14 PM
petersjo petersjo is offline
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Location: California
 
Join Date: Oct 2011
Posts: 4
Mein Auto: 1998 740IL
Unhappy Oil leaking

My 98 740IL just started leaking oil out from beneath the cap of the oil filter housing--not sure what you call it! It is literally pushing out through the threads on the cap, a very aggressive oil leak. I replaced the filter, put 2 new mounting screws/plungers, and even put an o ring under the cap but no luck. When I first took the cap off, there was no o ring, perhaps the oil change shop left it off. I cannot find out anywhere if that o ring must be there or not.
Hoping someone can shed some light on why the oil is pouring out and suggest how to fix. . Thanks so much!

Petersjo
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  #2  
Old 10-09-2012, 12:42 AM
JasonSC540ia JasonSC540ia is offline
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Location: Alamogetto NM
 
Join Date: Aug 2009
Posts: 676
Mein Auto: 1999 740i
There is suppose to be one there. Just buy a filter and change it again and install the o-ring. It will be fine.

When you have the cap off, check to see that they didnt over-tighten it and crack the cap.

Last edited by JasonSC540ia; 10-09-2012 at 12:44 AM.
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