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Old 04-18-2012, 08:21 PM   #1
Scooby Newbie
Member#: 106372
Join Date: Jan 2006
Chapter/Region: South East
Location: Palm Beach Gardens, FL
2006 Impreza WRX
Steel Gray Metallic

Default Oil Leak Above Filter (not what you think)...

2006 WRX 5 spd.....

As the title says.

Here is what I have changed so far:

Oil cooler gasket (twice)
New oil cooler
Valve cover gasket (it was leaking also)

Just finished the valve cover gasket earlier today. Not really surprised that there is still a leak. The oil is puddling in the same old place above the oil filter.

So I decided to sit under my car while it was running. The oil is definitely coming from one of the two bolts directly above the oil cooler. Which is well above the oil cooler gasket.

Anyone have any experience with this? Any what is needed to fix it?

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Old 04-20-2012, 06:45 PM   #2
Scooby Specialist
Member#: 216984
Join Date: Jul 2009
Chapter/Region: NWIC
Location: Coeur D Alene, ID
1996 Impreza outback


Maybe it could be a front main seal? Or the oil pump is slightly leaking from the bottom?
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Old 05-08-2012, 07:48 AM   #3
Scooby Guru
Member#: 46135
Join Date: Oct 2003
Chapter/Region: Tri-State
Location: NY
02 WRX
Sti V9 Spec C


take a white paper towel, wipe clean the area, then take a fresh towel and repeat the experiemnt where you run the engine.

When the oil seeps again, wipe it with the white towel and look at the color of the oil.

This is probably hydraulic oil from the powersteering banjo bolt.
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Old 05-10-2012, 09:40 PM   #4
Scooby Newbie
Member#: 186211
Join Date: Aug 2008
Location: DFW
2006 WRX


I have the same leak, 06 WRX TR
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Old 09-20-2012, 03:49 PM   #5
Scooby Newbie
Member#: 248474
Join Date: Jun 2010
Chapter/Region: MWSOC
Location: cincinnati
2006 impreza wrx


I have the same leak. I looked at a parts break down and found out there is another o-ring (same size) behind those bolts. I'm actually going to attempt to replace this tomorrow during my oil change. bad news is i'm pretty sure you need to remove some other stuff to get get to all the bolts..... hopefully I don't break anything in the process lol.
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Old 02-18-2015, 12:21 PM   #6
Scooby Newbie
Member#: 408731
Join Date: Dec 2014
Chapter/Region: MWSOC
Location: OH-IO!
2006 WRXWagonLimited


Any updates on this? My 06 has the same leak above the oil cooler
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Old 02-26-2015, 08:28 PM   #7
Scooby Newbie
Member#: 231418
Join Date: Nov 2009
Location: Kennesaw, GA
2006 WRX


im also looking for updates on this. i have the same leak
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Old 02-26-2015, 08:51 PM   #8
Scooby Newbie
Member#: 384901
Join Date: Mar 2014
Location: Allentown PA

Also have same kind of leak I cannot locate 03 Wrx.

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Old 02-28-2015, 03:56 PM   #9
NASIOC Supporter
Member#: 123843
Join Date: Aug 2006
Chapter/Region: NESIC
Location: Connecticut
2006 WRX Sedan SGM
Let LED's light your way!


Note: see Vlad's advice above. To reiterate, the power-steering pump is effectively located over the oil-cooler. If it is leaking, the fluid will run-down the face of the engine to or near the oil-cooler. Thus his advice to check the color of the fluid is valid: if it is red, it is power-steering (Dexron or equivalent) fluid.


2.5L WRX (2006-2007) and Forester XT (2004-2008)

Adapter-A to engine-block: 21370KA001 [gasket]
Adapter-A to Adapter-B (2): 806959030 and 806932040 [o-rings]
Adapter-B to Oil-cooler: 21370KA001 [gasket]

This is because the oil-cooler is angled away from the exhaust-header collector. The exhaust-header is different from other models and is designed to be slightly restrictive.

2.0L WRX (2002-2005) and 2.5L WRX STI (2004-2014)

Oil-cooler to engine-block: 21370KA001 [gasket]

Last edited by Big-E; 03-01-2015 at 02:06 PM. Reason: Updated information
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