So the car is at 75,000 mile without a transmission fluid that I know of.
The first owner might have but I have no service records and no way of knowing if it was done or not.

I hear not to use anything but Nissan matic-S fluid for the transmission.
But what I have on hand is 5qts of Valvoline Max Life Full Synthetic ATF

For the front and rear differentials I have Valvoline SYN power 75W-90 gear oil

Would these be good to use in the g35x?

I am not messing with the transfer case as I do not have any Nissan matic-D fluid, I hear this is all you can use for the transfer case and no substitute.
If I readily had access to Nissan matic-D I would have gotten matic-S fluid as well, but as you can see I am not.

So has anyone used this stuff in our car? any advice and or feed back would be great.

I will be using these two DIY articles:
Automatic transmission fluid change....help me make a diy
AWD powertrain fluid drain

Below are photos of the actual products I am using:

sorry for stupid large photos. I tried to resize them.

 

Well, I did everything but the transmission, only cause I found a better deal at AutoZone for the ATF.
Pep boys charged me $9.99qt, Auto Zone has them for $6.99qt.

I changed the front and rear differential with Valvoline SYN power 75W-90 gear oil and change the transfer case with Valvoline Max Life Full Synthetic ATF.
I also changed the engine oil with Mobil1 Extended Performance 5w-30 and a Mobile1 m1-110 filter.

The car seems to be smoother and pulls a little quicker, probably all in my head though. Either way the car seems to be good if not better. Now I just have to do the transmission fluid.