Gearbox Oil

[Essex2Visuvesi]

I have a couple of unopened bottles of this gearbox oil lying around from when I head my RX8
I know not all 75w90 oils are the same and some gearboxes can be a little fussy over brands of oil so was wondering if it should be OK to use in the MR-S gearbox?
 m http://www.idemitsu-usa.com/h/44/75w90-gear-oil.htm m