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Discussion Starter #1 (Edited)
Hello,

I have a 2009 2.5l @ 150,000 miles. The gaskets were already replaced at 100k but I am beginning to think its occurring again. I purchased a block test and the results were negative. I am not convinced because of the seeping oil under the car. Is this a head gasket issue despite the block test showing a blue color?

Thank you for your time,

Neil

20200115_104736.jpg 20200115_105228.jpg 20200115_105253.jpg (these pictures are looking up into the car)

20200115_130447.jpg this one is looking down into the engine.
 

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Discussion Starter #2
Hello,

I have a 2009 2.5l @ 150,000 miles. The gaskets were already replaced at 100k but I am beginning to think its occurring again. I purchased a block test and the results were negative. I am not convinced because of the seeping oil under the car. Is this a head gasket issue despite the block test showing a blue color?

Thank you for your time,

Neil

View attachment 477287 View attachment 477288 View attachment 477289 (all pictures are looking up into the car)
If you need me to post more pictures, I'll be happy to do just that.
 

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'17 OB 3.6 , '12 OB 3.6 (Deceased MVA), '11 OB 2.5 , '11 Legacy 2.5
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Welcome. Do you know who did the HG repair(s)? A Subaru dealership? Have the Valve/Rocker Cover gaskets been replaced? Do you know if your spark plugs have any oil on them?
 

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Discussion Starter #4
Thank you for the reply.
This car has put me through the ringer as it's my first car I purchased. At 100k miles the car experienced a catastrophic engine failure with a piston shooting a hole through the engine block. I brought it to a subaru mechanic (Not dealer) to replace it with a similar year and exact model engine. All headgaskts and covers were replaced with the replacement engine. As for as the spark plugs, I'll take a look at them. Thanks for your input.
I just don't seem to want to quit on this car. Maybe I should.
 

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Outback 2011 3.6R Premium
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Those pictures seem to be showing an oil “weep” which could be from the head gaskets BUT are more likely from the rocker covers.

Clean up the oil residue and then monitor further oil weep. I doubt you need to do anything except to monitor and occasionally clean off the minor oil residue.

Subarus seldom need a second head gasket replacement as the replacement head gaskets do not typically suffer from the problems of the original gaskets. The original gaskets had a “coating” that failed and typically created either an “oil weep” or a “coolant weep”.

A “block test” is not always a reliable test on a Subaru as it only checks for exhaust gases in the coolant and many Subaru’s with leaking head gaskets never have this problem (they have coolant or oil weeps to the outside of the engine but no coolant and exhaust mixing)

Seagrass
 

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2008 OB Limited 2.5i, Portland OR USA
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Don't despair. You have a running vehicle that loses a little oil - not unusual for 150k miles - and you don't yet know what the source of the oil is. Let's hope the Subaru specialist knew what he was doing when he put the replacement engine in at 100k, and this is just a matter of some routine gasketing around some other stuff that's known to occasionally have leakage issues.

The reason @seagrass asked about the oil around the valve covers and spark plug tube seals is because oil leakage in these areas is fairly common after 50k miles, and in fact much more common than the head gaskets. You should also look at the camshaft seals, and the two camshaft plugs in the rear. If all of these were done when the replacement engine went in at 100k, they would be the things I would first expect to start leaking 50k miles later. And none of these items are very expensive to fix.

Clean up the oil that's there now so you'll be able to see where it first starts leaking from, and work slowly through the diagnosis You have time on your side, even if it turns out it's the start of the head gaskets - they will start weeping pretty slowly. And keep the oil topped up, of course, while you are figuring this all out.

Good luck!
 

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Discussion Starter #8
Thank you for the encouragement! I just bought a hydraulic lift to help with any future repairs. I'm also beginning to understand that's there are a lot of helpful people in this community. Thank you again.
 
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