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I seem to have a leaking oil cooler. (heat exchanger) - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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YOUR RESEARCHI seem to have a leaking oil cooler. (heat exchanger) - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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Replace oil cooler

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Suggestion · Original poster

I am therefore pretty sure that the leak is higher up and that I need to replace the oil cooler.

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I seem to have a leaking oil cooler. (heat exchanger) - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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Leading evidence: 'Replace oil cooler' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace oil cooler' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

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Replace oil cooler

No successful repair reported for this finding.

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Reported fixes
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Discussions that contain suggestions
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

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Suggestion · Original poster

I am therefore pretty sure that the leak is higher up and that I need to replace the oil cooler.

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I seem to have a leaking oil cooler. (heat exchanger) - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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6 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

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POST 1 / ORIGINAL POSTEROriginal post

After starting the newly installed engine in my 2000 Boxster S I found a fairly serious oil leak coming from the oil cooler, my first reaction was o-rings, even though I changed them while the engine was out. The engine was bought from a "recycler" so I have no experience with it. Upon closer inspection I found this: It seems to me if the o-rings were the problem the oil would be leaking out under the oil cooler and there would be no way it could collect in the "tray" that forms the bottom of the cooler where the bolts are. Also there is almost no oil on the top of the crankcase. I am therefore pretty sure that the leak is higher up and that I need to replace the oil cooler. I will do some more running to see if I can find the general area of the leak. Meanwhile can anyone see an error in my logic?

POST 2Original post

Seems like there may be a crack where the "tray" section is attached to the rest of the heat exchanger. Did you apply the correct torque values?

POST 3 / ORIGINAL POSTEROriginal post

Quotes source post: 654893

Yes, I'm pretty careful with torquing. But there is a dent in cooler on the top rear edge, maybe it took a hit when it was removed from the donor car. I have another cooler from the engine that was originally in the car... but it is likely contaminated with bearing flakes like those I found in the oil pan. There is an oil cooler on Amazon for about $60 CAN with a year garantie and 30 day return. I will likely order it.

POST 5 / ORIGINAL POSTEROriginal post

I cleaned up the oil cooler and started the engine, immediately there was oil leaking out half way up. Mystery solved. Waiting for a new cooler.

POST 6 / ORIGINAL POSTEROriginal post

The old oil cooler has this little ding in it right at the level where it was leaking. ... doesn't look like much. Here is the new $50 oil cooler I got on Amazon installed and not leaking. Yeah!

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