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  #1  
Old 01-20-2012, 06:28 PM
Dave1965 Dave1965 is offline
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Default Oil Cooler Gasket Leak

Found out that my 2005 Pathfinder with 165000 miles on it was spotting the driveway with oil.

Degreased the area around the oil filter and determined that the gasket between the oil cooler and block was leaking.

For those having to do this, it's pretty easy.

Remove the splashshield and the oil filter cooler is staring you in the face. No need to remove coolant hoses as there is plenty of slack. Cooler unbolts with a 22mm socket that is torqued to 36 ft/lbs. Gasket costs $14 at the dealer.

The old gasket had taken quite a set and was about 3mm thinner than the replacement. Even after oiling both sides of the new gasket, the fit was snug in the oil cooler giving no worry about slipping out of place during reinstallation.

You can get Nissan OEM gaskets off of ebay for around $7 delivered but I wanted the car back in service today.
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  #2  
Old 01-20-2012, 07:21 PM
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NissanTech NissanTech is offline
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2004 Xterra
 
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Thanks for the information!!
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  #3  
Old 11-19-2012, 06:16 PM
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jboy jboy is offline
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Awesome post!

2006 creeping up on 100K and I'm having the same problem. I got the gasket in the mail today and will tackle this little chore probly this weekend. Thanks for the info.
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  #4  
Old 11-20-2012, 02:17 PM
softtail6 softtail6 is offline
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Quote:
Originally Posted by jboy View Post
Awesome post!

2006 creeping up on 100K and I'm having the same problem. I got the gasket in the mail today and will tackle this little chore probly this weekend. Thanks for the info.
Where id you get the gasket from? Thanks in advance.
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  #5  
Old 11-20-2012, 07:03 PM
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Same place I get everything! lol!

Theres a couple different sizes so be sure to get the right one for your model. Just search "nissan oil cooler" for the best results. This ones for mine. (2006 standard edition with a 4.0)

Genuine Nissan Pathfinder Frontier Xterra 4 0 Oil Cooler O Ring Seal New | eBay
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  #6  
Old 11-20-2012, 07:54 PM
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NissanTech NissanTech is offline
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Instructions to replaced the seal on an Infiniti FX with picture. Is the same procedure, same seal but the location is a bit different.

2003-2010 Infiniti FX35 Engine Oil Cooler Seal Replacement Procedure | Infinitihelp.com

Image from the service manual. 2005 Xterra

Oil Cooler Gasket Leak-capture-gif
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Oil Cooler Gasket Leak-capture-gif  
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  #7  
Old 11-20-2012, 07:57 PM
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Awesome! Thankyou!
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  #8  
Old 11-20-2012, 08:01 PM
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Nissan Tech... would you recomend replacing the relief valve like it says?
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  #9  
Old 11-21-2012, 03:33 AM
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mpe235 mpe235 is offline
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Quote:
Originally Posted by jboy View Post
Nissan Tech... would you recomend replacing the relief valve like it says?
I have never replaced the valve. No problems ever reported by not doing it. A lot of these leaks can be corrected by tightening the bolt. They seem to work loose after repeated oil changes.
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  #10  
Old 11-21-2012, 06:51 PM
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Cool! Thanks again!
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  #11  
Old 06-22-2019, 09:06 PM
agochee agochee is offline
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2009 Pathfinder
2008 Altima Sedan
 
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First of all, thanks the OP and this thread I fixed the annoying oil leak in my 2009 Pathy. My experience was a little different and I figured I'd update the thread with something else to look out for. I assumed my cooler o-ring was bad so I looked up the part and bought oil, filter, gasket, and a 22mm socket. When I got in there, I realized that AutoZone had given me the 3.5L version of the gasket. But, the original gasket was still good - the cooler assembly was just super loose, I'm assuming from removal of a tight filter during a previous oil change. I cleaned everything up and put it back together (since I didn't have another vehicle to get the right gasket), and voila! No more mess under the Pathfinder.
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