Mystery oil leak near passenger wheel

A forum for the legendary Nissan Pathfinder and Infiniti QX4.
priest05
Posts: 3
Joined: Thu Sep 21, 2023 1:03 am
Car: 2003 Nissan Pathfinder SE

Post

I was changing my drive belts on my 03’ Pathfinder LE and i came across a build-up of oil and dirt in the back of my skip plate. I think this is because of the old O rings but i’m not 100 percent. Any ideas/ suggestions on what it could be?


Mike W.
Posts: 419
Joined: Tue Jun 13, 2017 6:59 pm
Car: 2003 Infiniti QX4 with a drinking problem. Gone but not forgotten
2002 BMW 525it
2002 BMW 530i/ manual trans
The dark side, 2008 4Runner.. We'll see.
Location: California Whine Country

Post

A leak by the pass side wheel is likely the oil cooler. There's a couple of O rings in there, I only replaced the big one and it fixed the leak. Seems to be a common problem. I didn't even remove the coolant lines, I just cleaned it up so no grit would get in and pulled it off far enough to get to the O ring. Easy job.


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