Hello guys
What is the gear box oil of choice for the NSR 250 sp gearbox?
Years ago I bought a bottle of MOTUL gear oil, but never used it, it's unopened... Can't remember the code off top of my head. I'll have to look tomorrow.
Does oil decompose over years if sealed? Has g
ear box oil advanced over the years? We're talking since 1996 and whether I should junk this oil and buy a new bottle, or keep it.

what do u guys use and recommend?
Thanks
Graham