Wow, too funny....
I just called THREE Nissan dealers in my area...
All said about 16 qts to full flush and that's where they all stopped agreeing... HAHAH!
Dealer 1: NO, MATIC J ONLY! Nothing else. The Earth will crumble with anything else.
Dealer 2: No, MATIC S, we don't use MATIC J anymore, Matic J is junk.
Dealer 3: No, you can use Matic S, but we use a comparable SYN product.
You have GOT to be kidding me!
I'm about to just say the hell with it and just use a compareable Synthetic for the Transmission, like Amsoil or something. These stealerships are killing me!