35d oil leak diagnostic - Bimmerfest - BMW Forums



Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > X Series > X5 E70 (2007 - 2013)

X5 E70 (2007 - 2013)
E70 BMW X5 produced between 2007 and 2013. Discuss the E70 X5 with other BMW owners here.

 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
  #1  
Old 09-12-2019, 01:32 PM
Flying Ace Flying Ace is online now
Officially Welcomed to the 'Fest
Location: San Francisco, California
 
Join Date: Jan 2015
Posts: 1,980
Mein Auto: M6 GC ZCP; '12 X5 Diesel
35d oil leak diagnostic

I've had a minor oil leak on my 35d for about a year now. I lose about half a bottle of oil every 3 months. My local BMW dealership started offering a free "visual" inspection. I took the car in for an inspection of the leak and they came back with this "visual diagnostic":

1. Oil leak at turbo charge pipe PN 11617799873

2. Oil leak at oil pan area. Possible leak from oil level sensor gasket PN 12617607910 and PN 07119963151


Now I know there's always a good chance this is a misdiagnosis as this was simply a visual inspection. They pull the bottom cover off, maybe feel around the area of the leak and then estimate where the location of the leaks are.

Questions:

Issue 1. I think this is pretty straight forward. I'm going to buy a new pipe and the two seals: PN 13718596850 PN 11617796622
https://www.realoem.com/bmw/enUS/sho...58#11617799873


Do you think this will likely fix the leak related to the charge pipe? It appears this an intake air pipe to the turbo. How can an air pipe cause an oil leak? I can see the plumbing going to the blow-off-value and the turbine, so it's definitely plumbing for air intake into the turbo. This was the 2nd time they made the same diagnostic. Is this a misdiagnosis and is there anything else I should consider while I'm in the area?




Issue 2. This is the first time this diagnostic came up. I changed my oil 2 weeks ago, and I noticed at the point of the oil pan drain plug, a small flow/drip of oil was pooling on the plug's head. I double checked the drain plug to ensure it was threaded on correctly, and I used the supplied o-ring gasket and torqued it down to spec. So I'm sure the leak is not coming from the plug.

So I'm thinking of buying all the bolt, gasket and nut related to the sensor in addition to the sensor itself. #2, #18, #19.
https://www.realoem.com/bmw/enUS/sho...60#12617607910

Do you think it's overkill to buy the sensor, as I should replace the gasket first? If i pull the sensor out, does that mean the entire oil pan will drain, i.e. I'm effectively changing the oil?
Also, BMW identified gasket -151 as part of the diagnostic. On the diagram, I cannot tell where this gasket goes and it's not apparently related to the sensor's mounting position. Where does this gasket go, how many are there?


thanks in advance!
__________________
2014 F06 M6 (oil rig fire)
2012 E70 X5 diesel (oil burner)
2008 E90 M3 (oil distillates guzzler- Retired)
2013 bicycle (oily chain)

Last edited by Flying Ace; 09-12-2019 at 01:57 PM.
Reply With Quote
 

See More Related BMW Stories


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > X Series > X5 E70 (2007 - 2013)
Today's Posts Search
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On



Forum Jump


All times are GMT -7. The time now is 03:13 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
© 2001- VerticalScope Inc. All rights reserved.