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E60 / E61 (2004 - 2010)
BMW 5-Series E60 Sedan was first seen in the Unites States in the fall of 2003 with a 2004 Model Year designation. The E61 wagon followed shortly there after. The E60/E61 5 series is now available as a 528i, 528xi, 535i, 535xi, 550i and a 535xi sports wagon! -- View the E60 Wiki

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  #1  
Old 10-17-2015, 11:52 AM
Kurt_ Kurt_ is offline
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Location: Ontario
 
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Mein Auto: 2007 530xi
N52 Oil leaking from... somewhere.

I've got an oil leak. It's definitely engine oil. It's dripping around the passenger's side of the transmission and dripping off of the reinforcement plate. I'd call it a pretty slow drip, it seems to have a negligible effect on engine oil level.

Everything up top looks clean and dry as can be. I've recently done the oil filter housing gasket, oil cooler gasket, and valve cover gasket. It's coming from somewhere I can't see.

Any ideas where I should be looking? Is it possible it's a shaft seal? If it is, what can I do about that short of tearing out my transmission (Which I'm not going to do until at least summer)

http://www.realoem.com/bmw/enUS/show...diagId=11_3732

Last edited by Kurt_; 10-17-2015 at 11:53 AM.
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  #2  
Old 10-17-2015, 02:44 PM
txag_530i's Avatar
txag_530i txag_530i is offline
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Did you check the oil pan gasket?

Your best bet to finding these kind of PITA leaks is to clean everything thoroughly with brake cleaner (or similar) and then check back in a week or so.
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Old 10-18-2015, 08:23 AM
Kurt_ Kurt_ is offline
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If it was the oil pan gasket, would it leak when stopped? I'm pretty sure it's only leaking when running.

The leak is so up there that I can't see where it's coming from. I keep my engine clean, so if i could follow the oil trail up I could easily find where it's leaking from. Problem is that I can't follow it back far enough.

What other places could an n52 leak engine oil from?

I took some pictures but they really don't help explain it better. Leak is from the passenger's side.


Last edited by Kurt_; 10-18-2015 at 09:18 AM.
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  #4  
Old 10-18-2015, 09:02 AM
Bud B Bud B is offline
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Hi Kurt,
Quote:
If it was the oil pan gasket, would it leak when stopped? I'm pretty sure it's only leaking when running.
N52's are notorious for leaking from the Valve Cover Gasket and the oil pan!
How many miles are on your car?

if it is leaking from the valve cover gasket you will usually see white smoke on the passenger side near the firewall after it is started.
Raise the hood and start the car, do you see any smoke?

My '06 530i is leaking at both the oil pan and the valve cover gasket.
But as you, it is barely noticeable in iDrive and about a 1/4 of a quart per oil change.

I am going to replace the valve cover gasket because it leaks down on the engine and could cause other issues,
but I am not going to worry about the oil pan gasket because it is minimal very expensive and a real pain to replace.
The leak from my oil pan would have to seriously increase for me to worry about it.
Not to mention what little it drips is on the ground and will not harm my car.

Valve cover gasket would leak when the engine is running
Oil pan will leak all the time running or stopped.

Bud

Last edited by Bud B; 10-18-2015 at 09:24 AM.
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  #5  
Old 10-18-2015, 09:30 AM
Kurt_ Kurt_ is offline
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Location: Ontario
 
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Mein Auto: 2007 530xi
I don't think it's the oil pan or the valve cover gasket. I just did the valve cover last year and used some RTV silicone on both sides. It's not going to leak any time soon. Oil pan gasket I can't see but it's only when I'm moving. That's why I'm worried it's from the crankshaft seal: It'd be too much of a pain to care about, I think.

The oil is dripping down the passenger's side of the transmission. I can't tell how far up it goes, but I don't think it goes up more than halfway. If there's no other suggestions I might borrow a friend's lift, take off the reinforcement plate, and try to get some better shots / a better look.

(I don't like my car to leak. I feel bad for the environment, knowingly spreading synthetic oil all over the place when it can be fixed.)

Last edited by Kurt_; 10-18-2015 at 09:32 AM.
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  #6  
Old 10-18-2015, 09:50 AM
Bud B Bud B is offline
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Quote:
(I don't like my car to leak. I feel bad for the environment, knowingly spreading synthetic oil all over the place when it can be fixed.)
I hear you but in my case at 1/2 of a quart of oil a year that is equal to $3.00
and spending a $1,000.00 or somewhere around that much to fix an oil pan leak for the "Environment" is a tough call!

But more people should be like you!
God Bless you!

Bud
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  #7  
Old 10-18-2015, 07:13 PM
ggal625 ggal625 is offline
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I replaced my valve cover and oil pan gaskets and I still have a very slight leak in that same spot. My guess is it's the rear main seal. I'm going to just let it leak and live with it.
__________________
Greg
--
2006 530xi Touring
2013 328i (Wife's)

So I just bought an E61...
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  #8  
Old 10-18-2015, 07:23 PM
Kurt_ Kurt_ is offline
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Location: Ontario
 
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It appears bmw applies loc tite to the rear shaft seal to prevent leaks. I think it may be able to be patched with a good cleaning and a gratuitous helping of loctite

Last edited by Kurt_; 10-18-2015 at 07:24 PM.
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  #9  
Old 10-18-2015, 11:54 PM
Bud B Bud B is offline
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Quote:
I replaced my valve cover and oil pan gaskets and I still have a very slight leak in that same spot
Well, at least you know that your valve cover and oil pan aren't leaking anymore.
That's some consolation.

Bud
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