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  #1  
Old 09-06-2019, 05:13 PM
paramedic1079 paramedic1079 is offline
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Oil Leak Passenger Side

I recently discovered an oil leak on my 2011 X5 with the N55 engine. At first, I noticed a slight burning smell and smoke coming from the rear of the engine when it was idling for 10 minutes. I went under the car, pulled the skid plate, and discovered there is an oil leak coming from the passenger side near the right front driveshaft. The OFHG and oil pan gasket were replaced within the last 10k miles. It currently has 85k miles on it. Any ideas? Valve cover gasket??? Pictures attached.
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Last edited by paramedic1079; 09-06-2019 at 05:35 PM.
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  #2  
Old 09-07-2019, 04:57 AM
rav31 rav31 is offline
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Quote:
Originally Posted by paramedic1079 View Post
I recently discovered an oil leak on my 2011 X5 with the N55 engine. At first, I noticed a slight burning smell and smoke coming from the rear of the engine when it was idling for 10 minutes. I went under the car, pulled the skid plate, and discovered there is an oil leak coming from the passenger side near the right front driveshaft. The OFHG and oil pan gasket were replaced within the last 10k miles. It currently has 85k miles on it. Any ideas? Valve cover gasket??? Pictures attached.
@paramedic.....my 1st guess at your miles is the Value cover gasket. Every BMW that i have owned (13) will develop a leak some where on the VC or related area, depending on model. My .02 worth. Unfortunately it's difficult to see/find it with all the covers & such. Oil runs down hill! So will end up where you see it.

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Old 09-07-2019, 03:11 PM
paramedic1079 paramedic1079 is offline
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I took it to a reputable BMW indy shop. The valve cover has a slight leak but the major source of the leak is the engine mount. Apparently the engine mount is filled with oil and leaks over time. That would explain the source of a slight rattle from the passenger side.
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Old 09-07-2019, 03:22 PM
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Doug Huffman Doug Huffman is offline
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I believe that your engine mounts are vacuum loaded under some circumstances that vary from model to model; some loaded at low RPM and some at high RPM. They may be 'filled' but not with oil I think, maybe PS or ATF.
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Last edited by Doug Huffman; 09-07-2019 at 03:23 PM.
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Old 09-07-2019, 03:30 PM
paramedic1079 paramedic1079 is offline
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https://bmwtechnician.com/2016/07/09...e-motor-mount/
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Old 09-08-2019, 03:20 PM
rav31 rav31 is offline
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Originally Posted by paramedic1079 View Post
I took it to a reputable BMW indy shop. The valve cover has a slight leak but the major source of the leak is the engine mount. Apparently the engine mount is filled with oil and leaks over time. That would explain the source of a slight rattle from the passenger side.
@paramedic.......looks like an expensive repair. Did he give you a quote?
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Old 09-08-2019, 04:04 PM
ard ard is offline
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1. there are a few 'fluid filled' bushes on BMWs. Finding them in a 'leaking' condition is unusual. They usually fail, drain, dust/water/grime...and you just have a bad bush.

2. Great link. 3.2 hrs on the R motor mount. Its hard to find good data on 'book time' these days....
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OE is Original Equipment aka 'BMW Original Parts' aka 'What you buy at the BMW dealer with a BMW label'

OEM is Original Equipment Manufacturer... EITHER the company that made the OE part or.... A part this is identical to the OE part, but is sold by the OEM under their own label


OEM is not what BMW sells


http://www.bimmerzone.com/category/T...ricks_OEM.html

https://www.turnermotorsport.com/t-OEvsOEM
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Old 09-08-2019, 05:29 PM
paramedic1079 paramedic1079 is offline
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Originally Posted by rav31 View Post
@paramedic.......looks like an expensive repair. Did he give you a quote?

Valve cover - $570 in labor, $33 for BMW gasket, $48 for 6 new Bosch spark plugs (he's not charging me to put the spark plugs in since he already has everything apart, old plugs only have 10k miles on them but I'd rather just put new ones in for the sake of $48 dollars)
Engine mount - $380 in labor, $113 for BMW right mount...asked him if he'd recommend doing the left mount as well and he said yes, $98 for that mount...probably an additional hour or 2 for labor.

All in all probably looking around $1500 to do valve cover, spark plugs, and 2 new engine mounts

The engine mounts are not an easy job and it's not something I'd care to mess around with because you have to support the engine and you are working in very tight spaces. Not happy about it but this should be all the car needs for a while because everything else has been addressed.

Last edited by paramedic1079; 09-08-2019 at 05:32 PM.
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