Funny you mention that.
Right after I completed draining and filling with conventional valvoline 80w-90 gear oil,
The hell with it, my ocd kicked in and a few weeks later I joined the crowd.
Might as well make everything synthetic.
I decided to use synthetic Amsoil 75w-90 severe gear oil. Personal choice. Soon after those convenient squeeze packets appeared right after I completed the procedure.
Still got left over of both.
Sticking with the regular Nissan NS-2 cvt fluid though.