This is for the 6-speed manual transmission I presume. I think that is the only use of MTX oil.
After reading a lot of threads on this, lots of weird shifting problems with aftermarket oils. Often simply fixed by putting Nissan oil back in it. The 6-speed is touchy about what oil it has in it. At this point I have changed everything over to synthetic except the transmission. That I change with Nissan manual transmission fluid. It is the only oil that I won't change over to synthetic.