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Old 03-04-2012, 12:23 AM   Thread Starter #1
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Default Oil Cooler Ring Swap

hey guys whats good? today, i finally got the time together to attempt my first ever oil cooler O-ring swap. i've been having oil slowly leak out under the oil cooler and there really wasn't much else to point at other then the O-ring. because this job is incredibly messy, i couldn't do a step by step photo tutorial on it, but i will explain the procedure and i was able to take some pics once i got the oil cooler out.

1. drain out oil and coolant. drain the coolant as much as possible because it will drip for a while after the majority is out.

2. remove oil filter

3. take a 22mm socket and break loose the nut/bolt (its a bolt with a hex on it) holding in the cooler. its best to get a de-greaser of some kind and wipe it dry so the socket doesnt just slip. once you break it loose, keep loosening it and take out the nut/bolt

4. more oil will come out (not much more) and here is the MESSY part. there are two tubes coming out of the oil cooler. these tubes contain the remaining coolant that did not flush out from the radiator. once you remove these two tubes coolant will come out and a good amount of it so have your coolant container ready and try to aim the hose to the bucket, but it will be difficult. 9/10 times the coolant will mix with the oil and make the coolant unusable so have a fresh gallon of it ready.

5. once the cooler is out, the O-ring will be on the other side. mine was red and the new one from nissan is black. i dunno if thats normal or whatever. simply get the old ring out, place the new one, clean the cooler if you want and you're done with this part. now reverse the install, fill the motor up with oil and put coolant in the radiator, tighten down every and double check on it and you just saved yourself a good deal of cash!!! lol

big shout out to NiZMo1o1(alan) and CXJ Performance(cory) for once again aiding me and telling me how to do this. very helpful, great people! they are the gurus when it comes to the mechanical aspect of cars!!!





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oil cooler housing

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part number for new O-ring

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and in case anyone wants to know, this is the oil/filter combo i personally use.

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  Nice Writeup!!! Great info!!!!
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Last edited by KZ 259; 03-10-2012 at 12:58 PM.
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Old 03-04-2012, 12:27 AM   #2
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Default Re: Oil Cooler Ring Swap

Nice work!
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Old 03-04-2012, 12:31 AM   #3
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Default Re: Oil Cooler Ring Swap

Good job and nice write up..
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Old 03-04-2012, 12:18 PM   Thread Starter #4
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Default Re: Oil Cooler Ring Swap

thanks guys!
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Old 03-04-2012, 04:28 PM   #5
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Default Re: Oil Cooler Ring Swap

STUCK!!!
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Old 03-05-2012, 11:28 PM   #6
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Default Re: Oil Cooler Ring Swap

And this is where the oil consumption MYTH is BUSTED.

This is where your culprit is , you will NOT notice a leak on your drive way,

when the car is under load, it will slowly leak while your driving , as your driving the oil is dripping away from the car and on the roads.
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Old 03-22-2012, 04:04 PM   #7
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Default Re: Oil Cooler Ring Swap

Thank you for this thread I have to do this asap .
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Old 03-22-2012, 04:21 PM   #8
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Default Re: Oil Cooler Ring Swap

I remember doing this back in 2007. Never got a chance to do a write-up but it was such an easy install and cheap part. After that, I never noticed anymore little oil leaks.

Props for this write-up bro!
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Old 03-22-2012, 08:04 PM   #9
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Default Re: Oil Cooler Ring Swap

I did the oil ring swap without removing any coolant lines. Just take off the bolt and swap the ring. Yeah its a little harder to line it up from behind without taking it off, but it cut down on time and mess. Great write up though!
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Old 04-15-2012, 11:40 AM   #10
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Default Re: Oil Cooler Ring Swap

Hmmmmm, wonder if this is where the oil is coming from on my car, I never see drips on ground but the (R)side of the (engine from driver seat) is covered in oil. I seen it while I was draining and refilling the transmission and I thought it was coming from that rubber "jumper" hose, that in the photos above are indicated to be coolant lines.

I hate leaks! I think it need a new radiator too; it looks like it leaks around the plastic (WTF) end caps. Dont use much coolant but can smell it and see the "moss" around the plastic end caps where they meet the core.
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Old 04-15-2012, 06:25 PM   #11
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Default Re: Oil Cooler Ring Swap

Originally Posted by rezmedic View Post
Hmmmmm, wonder if this is where the oil is coming from on my car, I never see drips on ground but the (R)side of the (engine from driver seat) is covered in oil. I seen it while I was draining and refilling the transmission and I thought it was coming from that rubber "jumper" hose, that in the photos above are indicated to be coolant lines.

I hate leaks! I think it need a new radiator too; it looks like it leaks around the plastic (WTF) end caps. Dont use much coolant but can smell it and see the "moss" around the plastic end caps where they meet the core.
That's what mines turned out to be. Very easy fix. Oil ring was busted. Fixed and bammmm, no more leaks. The oil usually falls on the side of the filter. If that's your case.... then
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Old 05-20-2012, 09:20 PM   #12
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Default Re: Oil Cooler Ring Swap

I did this today very easy job .
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Old 05-22-2012, 10:20 AM   #13
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Default Re: Oil Cooler Ring Swap

Good stuff right here, nice job on the writeup.
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Old 06-29-2012, 10:04 AM   #14
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Default Re: Oil Cooler Ring Swap

I just did mine, took about an hour or so because I lost my wheel lock and had to do the complete job with the wheel still on. Thanks for the write up o didn't realize how easy this was! EddyMax your max looks awesome
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Old 01-18-2013, 04:46 PM   #15
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Default Re: Oil Cooler Ring Swap

Nice just what I need. Thank your
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Old 03-15-2013, 03:20 PM   #16
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Default Re: Oil Cooler Ring Swap

I just finished putting in the new ring, hope this stops the leak. It is definately one of the easiest things I have done maintenance wise to this car. Took less than ten minutes and you don't have to take the coolant lines off. Use a 5/8 socket on the big nut that runs through the center of the oil cooler and you can pull it back just enough to take a finger nail or razor blade and pop the old gasket off and slip the new one on.
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Old 03-15-2013, 04:02 PM   #17
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Default Re: Oil Cooler Ring Swap

I correct myself 7/8 socket to get that bolt off.
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