Hi Scotty - "Rev up your engines" Big Fan of yours on youtube - so my gear box (Manual on a Lexus IS 200) recommends 75w - 90 and all I can find here is 85w - 140 and 85 W - 90 would any of this work for me.
NB: I am in Africa (tropical Region)

It would work, but keep in mind that the gearbox might be stiffer when cold, even grind a little. Happens to me in my Celica when by mistake was put SAE 90 instead of 75w90, it would not go into second unless I stop, no grinding just as if there was no gear