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post #1 of 24 Old 26th October 2018, 03:41 PM Thread Starter
Awbimmer
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Oil Leak

So went to take the car out my garage for its annual service (UK) today and once I started her up and reversed out.. I found this huge oil leak coming from the sump.

I haven't really driven her since June and the engine oil is just 2.5k old.

About 9 months ago I had the diff oil and tranny oil changed as well as my rod bearings. Since then there's only ever been a small trace of oil but nothing every thst worried me. Literally nothing.

At a glance head on my oil cooler looks dry and looking down on the engine nothing seems "oily" or mucky.

Drove it less than half mile to my garage and when it was in their ramp I took a few more pics.

They weren't willing to take off the undertray as it wasn't booked and they had a long queue of customers understandably but I am going somewhere on Monday to have it looked at.

Any idea what could it be from the pics?
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post #2 of 24 Old 26th October 2018, 07:17 PM
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Hey, it can be a few things, but you gotta take the under tray off and trace it man....or else, it’s all speculations...
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post #3 of 24 Old 26th October 2018, 07:36 PM
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Could easily be ATF from the power steering. Starts off red, but over time turns a bit brown.


What fluid levels are dropping?

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post #4 of 24 Old 26th October 2018, 07:38 PM Thread Starter
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Quote:
Originally Posted by Dr.Dave.DDS View Post
Hey, it can be a few things, but you gotta take the under tray off and trace it man....or else, it’s all speculations...
I Hear ya pal. I'll have it checked up Monday and go from there.

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post #5 of 24 Old 26th October 2018, 07:40 PM Thread Starter
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Quote:
Originally Posted by DaveinGigHarbor View Post
Could easily be ATF from the power steering. Starts off red, but over time turns a bit brown.


What fluid levels are dropping?
Good point. Haven't checked power steering fluid but will do on Monday. The oil was very thick when I touched it so not sure... rly doesn't seem like an oil cooler issue but as gentleman above said, gotta take off the undertray.

Would there be so much Power steering fluid in the car and then even more?

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post #6 of 24 Old 26th October 2018, 07:45 PM
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The power steering cap has a vent so if it was overfilled, the extra could get pushed out. I would think it would be very apparent as there would be oil all over by the reservoir.

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post #7 of 24 Old 26th October 2018, 07:46 PM Thread Starter
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Quote:
Originally Posted by DaveinGigHarbor View Post
The power steering cap has a vent so if it was overfilled, the extra could get pushed out. I would think it would be very apparent as there would be oil all over by the reservoir.
Then, no. It doesn't seem to be that since there is no apparent mess around the reservoir

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post #8 of 24 Old 26th October 2018, 08:16 PM
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I'm willing to bet 100 it's the oil cooler it looks to be coming from the front tray and working back.

btw why does all E60 M5 have the subframe jack pad broken or missing?

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post #9 of 24 Old 26th October 2018, 08:23 PM
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Quote:
Originally Posted by Ferris View Post
btw why does all E60 M5 have the subframe jack pad broken or missing?

Haha add me to the list... I think they must fall off while driving.


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post #10 of 24 Old 26th October 2018, 08:32 PM Thread Starter
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Quote:
Originally Posted by Ferris View Post
I'm willing to bet 100 it's the oil cooler it looks to be coming from the front tray and working back.

btw why does all E60 M5 have the subframe jack pad broken or missing?
If this is the case then I'm happy because its a common issue and way fix. Fingers crossed.

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