Your choice.
I was told it is slightly different to Dexron III in that it has special additives/cleaners added to it to help keep clean, some extra sensitive internal components, so communication to ECU was not interfered with.
I got this from a couple of different Nissan's Parts dealers. I never followed up with Nissan formally.
Nissan propaganda ???. I am not going to debate your decision.
By the way, sorry if my response implied any disrepect, I was only trying to help, and just being clear in what I would do.