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E90/E91/E92/E93 (2006 - 2013)
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  #1  
Old 12-20-2013, 06:34 AM
burn_ashh burn_ashh is offline
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Seeing oil stains overnight.

After i car is idle for a while, like say overnight, off late i have been seeing oil stains below. Would it be reason of excess oil or is there a pipe problem or what could it be? See pic below. All advice/help is appreciated

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  #2  
Old 12-20-2013, 07:07 AM
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Zooks527 Zooks527 is offline
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Drops on pavement tend to all look alike, especially in a picture.

If you could put a large piece of white construction paper down on the driveway, then park over it so that we could see the color of the fluid that's making the drops, that might help a bit with your question.
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Old 12-20-2013, 08:37 AM
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CALWATERBOY CALWATERBOY is offline
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Quote:
Originally Posted by burn_ashh View Post
After i car is idle for a while, like say overnight, off late i have been seeing oil stains below. Would it be reason of excess oil or is there a pipe problem or what could it be? See pic below. All advice/help is appreciated

Is it oil? How do you know?

Hmmmmm.....open the hood.....look for leakage around the valve cover and oil filter.

How'd it go?
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  #4  
Old 12-20-2013, 08:53 AM
burn_ashh burn_ashh is offline
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Seeing oil stains overnight.

I rubbed off what was on the ground and it was oil indeed. But i am trying to figure out the problem. Is it pipe prob or just extra oil leaking....i am not sure.


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  #5  
Old 12-20-2013, 09:00 AM
hondo402000 hondo402000 is offline
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did you just change your oil?
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  #6  
Old 12-20-2013, 09:14 AM
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Best to get it on a lift where you can see where coming from

Our cars at this age tend to start seeping oil from the valve cover gasket or oil filter housing.

Often goes on for a while unnoticed getting blown back on the bottom of the engine and other parts.

If its hitting the ground the seepage is getting more serious.
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  #7  
Old 12-20-2013, 09:17 AM
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cwinter cwinter is offline
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Yep, as indicated I'd check the valve cover and oil filter. Though I'd suspect the filter first, since on the valve cover, a small leak would usually yield oil burned to the outside of the engine where the gasket failed versus oil drops on the floor.

The drain plug is under a small plastic door, so I wouldn't expect these kind of small drops from the plug, but that would still be another place to check.
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  #8  
Old 12-20-2013, 02:13 PM
burn_ashh burn_ashh is offline
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Seeing oil stains overnight.

I took some more pics and attached them here. Click image for larger version

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Does this help narrow down the issue?


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  #9  
Old 12-20-2013, 02:19 PM
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cwinter cwinter is offline
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When was the last time oil was changed on the vehicle and who performed the oil change?

Based on all the deposits around the filter housing, it seems something isn't sealed correctly there.
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  #10  
Old 12-20-2013, 02:28 PM
burn_ashh burn_ashh is offline
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Seeing oil stains overnight.

I recently got a top up from the dealership and that was a time anything was open under the hood. Do you think it's just the problem of not being tightened properly or is it something more than that like a gasket or something else?


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  #11  
Old 12-20-2013, 02:40 PM
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cwinter cwinter is offline
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Originally Posted by burn_ashh View Post
I recently got a top up from the dealership and that was a time anything was open under the hood. Do you think it's just the problem of not being tightened properly or is it something more than that like a gasket or something else?


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I'd have it looked at. In comparison, the portion of metal below your black filter housing on my car is completely clean aside from a bit of dust. Yours is practically completely coated in oil. Something isn't right and it could just be a gasket or perhaps the filter housing isn't completely screwed on.
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  #12  
Old 12-20-2013, 06:14 PM
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Sometimes it's best to clean the oil with a solvent and start again watching for the point of origin. Oil creeps and flows with gravity so it can be tricky to spot a small leak. It could just be a sloppy recent oil and filter change. I doubt that the large O ring sealing the filter cap is torn but anything is possible.
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  #13  
Old 12-20-2013, 11:39 PM
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Does this help narrow down the issue?

Some.

Now hear THIS
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  #14  
Old 12-21-2013, 08:27 AM
burn_ashh burn_ashh is offline
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Seeing oil stains overnight.

@waterboy and all. Here are few things i found.

1. The part belows cap was a little loose and when i checked inside the oil level is half. What is this part for and what oil does it use? Also i observed that the hose near it looked fine but around the part and the hose oil seemed like settle which i cleaned now and tightened the part. Could this being loose be a reason of oil spillage under the hood.

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2. But then when i was cleaning around the engine i observed inside and this is what i found.

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Is the engine oil by itself leaking somehow? The cap of the engine oil inlet is tight and there is no spillage there. Its only under that and around the parts surrounding it.


Pls tell me this is not going to be a 2000$ repair. I dread it and i will sell the car than have that repair.


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Old 12-21-2013, 08:41 AM
hondo402000 hondo402000 is offline
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that cap with the green ring is the power steering container. it could be leaking but if you have oil on the drive way, thats not it, PS fluid is red. Now based on the pics I see, your leak has been going on for quite sometime, I would recommend getting a engine degreaser, spray it on the engine, let it sit for about 30 minutes then hose it off. preferably at the car wash with hot water and some pressure, ( but then I dont know if doing that will affect components in the engine bay, I usually do it when the engine is somewhat cold and with the engine running. Do this at your own risk, Once cleaned then inspect the engine once a day and see if you can tell where the leak is coming from, Like previous post, Valve cover gasket, or oil filter housings have been the main points of leakage, both are some what easy to DIY, thats if you have a bentley manual for the procedure, and I highly recommend getting one. if you do the gaskets your self you will more than pay for the Manual.
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  #16  
Old 12-21-2013, 09:13 AM
hondo402000 hondo402000 is offline
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if you do the work, just be warned, Blue headed bolts are NOT reusable
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  #17  
Old 12-21-2013, 09:19 AM
burn_ashh burn_ashh is offline
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Seeing oil stains overnight.

Anyone living in the NJ, PA, DE area that can help me with a DIY? I am newbie and dont want to risk an engine overhaul. I will be glad to buy drinks and dinner after the help.


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  #18  
Old 12-21-2013, 09:22 AM
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Agree with washing the engine and getting a fresh look at what is or is not leaking.

I put a plastic bag over the alternator, spray degreaser on the dirty parts, marinate for 10 minutes then carefully blast with my pressure washer. Barely warm, not hot engine. Then blow dry with leaf blower, start and drive the car to complete eliminating residual moisture.

Now you can watch a clean canvas for any leaks.
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  #19  
Old 12-21-2013, 09:23 AM
R1200 R1200 is offline
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It's possible that during the last filter change a new O ring in the cap was left off. The cap will be tight but it will leak. Remove the oil filter cap and check that the rubber O ring is there and not torn.

A simple test to determine the type of fluid leak is to spray the leak with water. Hydraulic fluid (brake or steering) will turn milky white while engine oil will not and glycol is coloured.

For the next time you find a leak.
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Old 12-21-2013, 09:43 AM
burn_ashh burn_ashh is offline
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Seeing oil stains overnight.

All this is going way off my head. I will start with a degreaser and try to get a wash done if possible. See if that helps.


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  #21  
Old 12-21-2013, 11:40 PM
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sptt144 sptt144 is offline
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Clean it up. See where its' coming from. Chances are that it's the oil filter housing gasket as that is first to start leaking. It doesn't look super concerning so you should be able to track it down.
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  #22  
Old 12-22-2013, 12:27 PM
jburke4689 jburke4689 is offline
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Quote:
Originally Posted by hondo402000 View Post
that cap with the green ring is the power steering container. it could be leaking but if you have oil on the drive way, thats not it, PS fluid is red. Now based on the pics I see, your leak has been going on for quite sometime, I would recommend getting a engine degreaser, spray it on the engine, let it sit for about 30 minutes then hose it off. preferably at the car wash with hot water and some pressure, ( but then I dont know if doing that will affect components in the engine bay, I usually do it when the engine is somewhat cold and with the engine running. Do this at your own risk, Once cleaned then inspect the engine once a day and see if you can tell where the leak is coming from, Like previous post, Valve cover gasket, or oil filter housings have been the main points of leakage, both are some what easy to DIY, thats if you have a bentley manual for the procedure, and I highly recommend getting one. if you do the gaskets your self you will more than pay for the Manual.
The CHS power steering fluid is very light green, not red. I can't read the cap on his but I believe that is what it is. The leak looks like the infamous Oil Filter Housine Gasket. It is dripping on the serpentine belt and be slung around the compartment.
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