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  #11  
Old 12-21-2015, 12:57 AM
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Check out the info in this thread:

http://www.xoutpost.com/bmw-sav-foru...at-gasket.html
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  #12  
Old 12-21-2015, 01:41 AM
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Quote:
Originally Posted by wsmeyer View Post
A 2006 4.8si is an E53 chassis and this thread is in the E70 chassis category
I realize that. Thought it would be the same.
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  #13  
Old 12-21-2015, 01:44 PM
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Quote:
Originally Posted by wsmeyer View Post
Thanks, looks like upper timing chain cover gaskets will have to be replaced as well...
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  #14  
Old 12-21-2015, 09:17 PM
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Ordered parts today. Unless the upper timing chain cover is leaking, I decided not to touch it. Otherwise I will have to lift the valve cover gasket, which would require removal of intake manifold, etc.

I would like to know if this is a good strategy?
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  #15  
Old 12-21-2015, 09:22 PM
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Sound decision IMO. The only overlap in work between the oil thermostat housing gasket and the valve cover / upper timing covers is the electric fan, intake runners and serpentine belt. All of that is maybe 20 minutes work.

If you do need to do either of the valve cover gaskets or timing covers I would do them all at once and just be done with it.
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  #16  
Old 12-21-2015, 09:31 PM
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That's the plan. If it turns out the leak source is the upper timing chain cover above the oil thermostat housing, I will replace both valve cover gaskets and timing chain covers (along with various O-rings), and probably spark plugs, too. At this point I hope all those won't be necessary.
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  #17  
Old 12-30-2015, 08:21 PM
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2009 Xdrive 4.8i oil leak: oil cooler thermostat or timing cover gasket, pic ...

Well I ran out of daylight today so I called it a day (not that it matters much lol).

Any specifics on how to get the two smaller E-torx bolts on the oil cooler thermostat? I have a bunch of sockets/extensions but none worked so far.
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  #18  
Old 12-30-2015, 08:32 PM
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Hopefully you are using e-torx sockets?

They are a PITA but as I remember I had the most luck with a short wobble extension on the e-torx socket. As I mentioned in this thread:

http://www.xoutpost.com/1052557-post8.html

I replaced them with stainless steel socket head cap screws I got from Orchard Supply.
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  #19  
Old 12-30-2015, 08:55 PM
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2009 Xdrive 4.8i oil leak: oil cooler thermostat or timing cover gasket, pic ...

Yes, I am using e-torx sockets. I have two different sets, long and short. I tried both sets with a universal joint but I may need a different extension. At this point I couldn't even get the e10's on the bolts straight.


I will definitely consider replacing the bolts with allen head ones if/once I get them out. Not worth the hassle trying to put the originals back in
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  #20  
Old 12-30-2015, 09:02 PM
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By the way, what was your angle of approach, top or bottom?
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