REAR DIFFERENTIAL OIL:
We have been having 40F weather lately
, but today was exceptionnal at 70F
With such a beautiful day outside, I had to find something to work on the car.
I decided to serviced my differential and transfer oil fluid.
I have never done it, and apparently, you are supposed to do it every 30,000 or so miles?
From watching some videos on youtube, the fluid was very dark after just around 30,000 miles on some cars. So I thought I was well overdue, since I am at 100,000+ miles.
To my surprise, my fluid was still clear, I expected it to be very dark. Maybe because of my driving habit, since most of my miles are highway, I do not do a lot of stop and go driving.
Nissan service manual calls for Genuine NISSAN Differential Oil Hypoid
Super GL-5 80W-90, I could not find it online, so I went to my dealer and got a quart.
It is specially made by Penzoil for Nissan ($17/qt).
You also need 2 gaskets plugs, as nissan says to never reuse the existing gasket ( part below )
.The service manual calls for 1pt to refill the differential fluid and 5/8pt for the transfer oil.
You will need a pump to get the new oil in the differential, since there is a bar in front of the refill hole. I forgot to get one at the store, so I had to squeeze the fluid out of the bottle with a hose attached, not the best way to do it.
Also, you will need to remove a small black box held by 1 screw in order to access the refill hole.
I did use a breaker bar in order to loosen both screws, they were really tight in there.
To refill both the differential and transfer oil, just refill it up to the refill hole. When you see it dripping down the refill hole with the car leveled, that's how you know it is filled, easy enough!
The oil is very thick and has a good viscosity, also has a very strong smell.