Posted: Apr 29 2008 at 3:53pm | IP Logged

I have an 05 NISMO Crew Cab 4x4.  It has about 53K on it and I just noticed a problem with my rear axle/diff.  The truck is mostly driven on the highway for the last 30000 miles or so and occasionaly pulls a small boat (1500-2000lbs).  I changed all the drivetrain fluids about 20000 miles ago and used all nissan fluids.  Last week I noticed a little drp on the driveway and found it to be coming from a small fitting on the rear axle.  It looks to be a pressure relief vent, it is on the pass side of the axle about half way between the diff and the hub on top.  There is a little bit of fluid leaking out that if not wiped off for several days will be just enough to drip a bit. 

I went to the dealer and they were no help.  They want 100.00 just to put their head under the truck and tell me if it is a problem or not.  I know this vent part is only 15.00 from the dealer.  Has anyone seen this or does anyone know what may be causing it?  Thanks in advance for any help!