Oil cooler leaking (05 Canadian X-Trail SE) - Nissan Forum
 
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Old Nov 6th, 2014, 07:50 PM Thread Starter
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Oil cooler leaking (05 Canadian X-Trail SE)

Hey guys

After a long road trip and parking the car I could smell burning oil which I thought was weird so i investigated... turns out my oil cooler is leaking...

did a little research on it online and lots of threads suggested it's a common problem for nissan's that the 0-Ring inside the oil cooler fails and all you need to do is replace it... great... should be rather easy fix...

Called Nissan (locally in Edmonton) and they told me they dont sell that o-ring only... instead I have to buy the whole unit.... for $660!!!!

I googled some more and found out it's just a typical "O" ring.... my question to you guys.... as anyone had this issue with their oil cooler?

If the weather holds out this weekend, I might disassemble the unit and see what my findings are... hopefully it is indeed just a basic O ring and I can source one out somewhere locally and not spend 600+ dollars....

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Old Nov 7th, 2014, 08:47 AM
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AUSTRALIAN X-TRAIL FORUM :: Engine Mechanical :: fixing an oil cooler leak | Runboard

Hi check out the above link for a how to and alternate parts for the gaskets.

I wasn't aware of this, so at least its a heads up, in case I ever have the same problem.
Saw this video on YouTube for an Infinity, gives an idea as to the part and the gasket, but I gather ours is not in the same spot. The video shows a squarish gasket that must be similar to what is described in the Aussie thread.
https://www.youtube.com/watch?v=RUWUNa7q42k

And lastly in my attempt to be of help, I saw there was a guy in Alberta who was listing the necessary gaskets for 20$. Appears he never sold them and delisted the ad, but you could contact the seller and see if he still has them. Otherwise maybe he could guide you in contacting the place that he got them from. Based on the listing description he could be quite helpful.
2006 Nissan X Trail OIL Cooler Seal SET FOR 2 5L Engine NEW | eBay

Good luck with it. Let us know how it goes.
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Old Nov 7th, 2014, 08:48 AM
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What is happening I have answered this twice and my posts aren't appearing.
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Old Nov 7th, 2014, 08:49 AM
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Yup something is not working
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Old Nov 7th, 2014, 08:50 AM
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For some reason posts are not being displayed
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Old Nov 7th, 2014, 09:35 AM
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Looked at the service manual, and our cooler is nothing like the Infinity video, however it is like the one in the following video for an Altima.
https://www.youtube.com/watch?v=fBsL4iWxplA

The guy is confused because it cannot be a 2000 model because those did not have the 2.5 engine. Its most likely a 2002 or later. Nevertheless gives a much better idea of what is involved. Cannot really see why Nissan would insist on selling the whole part.
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Old Nov 7th, 2014, 10:47 AM
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2007 Nissan Altima Sedan Oil Cooler - NissanPartsZone.com

Its not so obvious finding the actual Nissan part. The above shows it, but is from a 2007 Altima. It shows the gaskets and the proper part numbers. I would lay odds that it is the exact same as you require. It would seem a fair number of 2007 plus Altimas, Rogues and other models experience this same problem.
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Old Nov 7th, 2014, 11:32 AM
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Well, having compared with the X trail service manual, looks like I lose my bet. The flat gasket that goes against the block with 4 holes looks quite similar, but the actual oil cooler is different than the flat top plate one in the Altima video and the part diagram from Nissan part zone.
In the X trail schematic from the service manual the gasket in the oil cooler is an o ring. From the looks of it, its more similar to the one in the infinity video, but its not behind the oil filter.
As its in back of the engine, I couldn't see mine from above, but it should be on the lower back part of the engine passenger side.
Not sure if it can be done on jack stands, but I guess with the wheel off and wheel well cover removed things might look brighter for removal. If you don't have the service manual, I could send you the relevant pages.
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Old Nov 7th, 2014, 12:22 PM Thread Starter
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Quadraria10 thanks so much to that ebay link haha the bid ended but no one bid on it and the user isn't too far from me... I just msged him and hopefully he'll be willing to meet in person and I could grab those off of him

I've changed the gasket before from the cooler to the engine block (thinking that was the problem) but now I know it's the actual cooler it's self the leak is from...

Now I gotta drain my coolant (I need to change it anyway) and take the whole unit out.. it's gonna be a pain in the butt because you're right, it's tight.. but its gonna be done :S

Thanks again for all your help! I'll post some pics and stuff if I find a fix
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Old Nov 7th, 2014, 01:17 PM
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Note this Nissan part
21304-8H700

It's a bit strange in that in the diagram it seems to refer to the flat gasket with the four holes, and if you go to google the Nissan part and go to images you will see one with that number. Its listed on ebay and is the gasket, but its not the O ring.

However, if you search the part in another official nissan part website there is no picture but they refer to O ring.

21304-8H700 - Nissan Parts Zone)

Its only a few bucks so it may be worth checking your dealer and that part no.
There is also another smaller o ring on other diagrams that has part no 21334 on diagrams that goes with bolt on top of oil cooler. But I cannot find the part extension number for the X trail. Nissan part code numbers are there own mysterious universe.
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Old Nov 7th, 2014, 01:24 PM
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Glad I was able to help. Hope I never face the same thing. Nevertheless it would be great to be able to find the actual nissan part. Maybe when I get a chance I will check with a local dealer parts dept, to see if there is an O ring that corresponds. Otherwise find out from that ebay guy where he got them should someone else be in need. Keep us posted.
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Old Nov 7th, 2014, 01:28 PM
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Last thought, that O ring is so similar to the one used in the 3.5 engines that maybe one of them would fit.
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Old Nov 7th, 2014, 01:41 PM
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What a way to kill a day off lol. I called dealer and the part number comes up as an o ring. When he looks at his diagram it points to the flat gasket. So he figures that is what it is and not the o ring needed. Also according to his diagram the oil cooler has to be replaced entirely $648 plus tax. He doesn't show it as being able to come apart.
I said that is not what is illustrated in the service manual.
I wish it was easier to post the manual illustration. Cannot wait to hear your findings.
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Old Nov 8th, 2014, 12:34 PM
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Is it leaking from the flat gasket against the block or the internal o-ring inside the cooler? I think you can replace the o-ring inside the cooler. And it sounds like you can get the gasket from nissan. Hopefully it's a fairly easy fix.

Here is a link to a diy fix http://baustralianxtrail.runboard.com/t130293

Here is the manual page

Last edited by chadn; Nov 8th, 2014 at 12:44 PM.
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Old Nov 8th, 2014, 02:49 PM
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Good man Chadn. That illustration is exactly what I wanted to post. His leak is the internal o ring, and he has previously replaced the flat gasket that goes against the block. However Nissan dealers here do not seem to have access to this as their diagram does not show the oil cooler as being a part that could be serviced. You can order part 7 no problem, but they do not seem to have a clue as to how to help you get the main O ring no 4,nor can they give you info about no 6. I did not bother asking about the relief valve. $ 648 plus tax with zero core refund is outrageous. If you refer to the X's on the diagram they are the items to be replaced with every disassembly. So, how come the parts department stands there and tells clients its non serviceable.
I am just not sure if they are ignorant or want their clients to be but they do frustrate the heck out of me.
I note that on other forums you often have someone from the manufacturer contributing and trying to address customer problems. Where is Nissan here?

Anyway we will have to get the bottom of this and try and find the appropriate parts without dealership help. I may just call Nissan Canada and voice my dissatisfaction.
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