what should I put in my differential?

[rexy238]

I am having a hard time finding the right gear oil for the differential (planning to change it at 15K) . Available locally here in Norhtern CA is
Valvoline non synthetic 80w-90, Mobil 1 75-90 synthetic. I guess I can order online maybe Pennzoil or Amsoil, but shipping is too expensive. I called Mobil 1 and asked if 75W-90 is okay ( of course they will say it is- but I'm doubtful). What do you guys use? I have the 6MT with LSD, by the way.

[Gilley]

According to your owner's manual, you should use the following in the differential of your 07 sedan:
Genuine NISSAN Differential Oil Hypoid Super GL-5 80W-90 or API GL-5 Viscosity SAE 80W-90. For hot climates, viscosity SAE 90 is suitable for ambient temperatures above 32°F (0°C).

Look at the bottle and make sure it is GL-5 rated. I use the Mobil 1 in my coupe. The 75w designation means it will be a little thinner at cold temperatures, which are rare where I live.

[rexy238]

The local Infiniti dealership don't sell the genuine Nissan Differential fluid. The parts person claimed they used Pennzoil ( I should have asked what weight) that they buy in bulk, so they can't sell me retail. I wonder if putting the Mobil 1 75w-90 will void my warranty in any way, climate here doesn't drow below 30 degrees in winter.

[mikeb]

At my Chrysler/Jeep dealership, we stock GL-5 80w-90 Hypoid differential oil. Why is that any different from any other oil that says exactly the same thing on the label? So, I guess the question might be....What is the difference between "Genuine Nissan Oil" and "Genuine Mopar Oil"?

Mike

[Gilley]

Originally Posted by rexy238

I wonder if putting the Mobil 1 75w-90 will void my warranty in any way, climate here doesn't drow below 30 degrees in winter.

The Mobil 1 is GL5 rated (I just checked the bottle) as is the 80w-90 Shell Rotella that I used in my G sedan.

The 75w-90 will work fine for you.

Originally Posted by mikeb

At my Chrysler/Jeep dealership, we stock GL-5 80w-90 Hypoid differential oil. Why is that any different from any other oil that says exactly the same thing on the label? So, I guess the question might be....What is the difference between "Genuine Nissan Oil" and "Genuine Mopar Oil"?

Mike

GL5 is what is required, regardless of the brand. Neither Nissan not Mopar make their own lube.