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2010 X5d Oil Coolers Leak? 2010 X5d Oil Coolers Leak?
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  #1  
Old 01-29-2014, 03:38 AM
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2010 X5d Oil Coolers Leak?
I have a 2010 X5d with 50k miles. I noticed under front sides plastic in front of the two wheels, there are some oil spots. It seems like leaks from the two oil coolers. No dripping so far, but worries me... I dont see anywhere else leaking.

Anyone had similiar problem?? please help...

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Old 01-29-2014, 02:01 PM
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Had the same thing on my 2011 x5d several months ago. Turned out to be intercooler seal leaking. Replaced under warranty.
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Old 01-30-2014, 02:29 AM
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Just out of warranty... I see no dripping or anything.. I hope its nothing serious... Is there a DIY to fix this?
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Old 01-30-2014, 07:48 PM
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Quote:
Originally Posted by windforce View Post
I have a 2010 X5d with 50k miles. I noticed under front sides plastic in front of the two wheels, there are some oil spots. It seems like leaks from the two oil coolers. No dripping so far, but worries me... I dont see anywhere else leaking.

Anyone had similiar problem?? please help...
How interesting is that picture!!!!! My car too was missing the lip in front on the wheels: I thought someone removed it at some point and forgot to put it back... Maybe it was never there to begin with... Just like in your case there were the 3 metal inserts, but nothing attached to it. It's part #3 here: RealOEM.com * BMW E70 X5 3.5d Wheel arch trim, front.

If you look very carfull in these picture you'll see them: Review: 2009 BMW X5 xDrive35d Photo Gallery - Autoblog

Now to get back on topic: what oil coolers are you referring to? I'm not aware of any oil cooler in that area... On the driver side there's the auxiliary water cooler and the passenger side should be empty.

The only oil cooler I know of is the power steering one; the transmission oil is temperature controlled through a oil-water heat exchangers. All of these are in the center so if they were to leak I would expect traces of oil elsewhere

If it does indeed come from the intercooler (that too is in the center) I would question what and why oil is in there to begin with...

If I were you I would actually remove the bottom plastic and see where is it coming from.

Another possibility is that is just residual cosmoline (the protective oily stuff they put on the engine during transport) that was not properly washed off.
Last edited by ZetaTre; 01-30-2014 at 08:15 PM.
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Old 01-30-2014, 08:09 PM
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Zeta i was think its the cooler thing on the driver side in front of front wheel. U will see vents in front of wheel.

Regarding the splash flaps in front of the wheels, im not too sure if we are supposed to have them cuz i know 2011+ have them. I bought mine used.

It could be plastic shine details they put before i bought the car.

I was so relieved after reading your reply.

I will take a deep look when i have time.

Thank u
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Old 01-30-2014, 08:13 PM
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Originally Posted by windforce View Post
Zeta i was think its the cooler thing on the driver side in front of front wheel. U will see vents in front of wheel.

Regarding the splash flaps in front of the wheels, im not too sure if we are supposed to have them cuz i know 2011+ have them. I bought mine used.

It could be plastic shine details they put before i bought the car.

I was so relieved after reading your reply.

I will take a deep look when i have time.

Thank u
Yes, the one on the driver side is actually an auxiliary water cooler: look closely and you'll see that the drive side is a real vent, while the passenger is fake.

Regarding the flaps, mine too was used so I too can't say whether they were removed or never there. The picture of the test from autoblog I posted clearly show them on a 2009 35d.
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Old 01-31-2014, 02:04 PM
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There is an oil cooler there. Here is what mine looked like after I took out the fender liner to get to the headlight bolts



Its all covered in road crud from the winter I cleaned it thoroughly.
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Old 01-31-2014, 02:06 PM
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That's not an oil cooler: that's an auxiliary water cooler.

There is no oil coolers in our cars: both engine oil and transmission oil are temperature controlled to oil-water heat exchanges.
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Old 01-31-2014, 02:13 PM
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^^ I would care to disagree, I definitely had oil coming from the lower line when I disconnected it to get it out of the way. Here are the BMW instructions (without the diagrams)
http://www.justanswer.com/bmw/2eq16-...ymbly-e70.html

You will see it specifically references the oil cooler
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Old 01-31-2014, 02:17 PM
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That would be odd.

Here's the BMW training paper: page 45 shows it as #17 being part of the water cooling https://drive.google.com/file/d/0B1e...it?usp=sharing

As well as here you see it part of the water cooling system: RealOEM.com * BMW E70 X5 3.5d Cooling System Water Hoses

Not want to be a dick, but are you sure?
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