[rocar]

Want to change gearbox oil of a 6 spd getrag ,is 75w90 syntetic ok ?

 

[T04Z GTR]

There are plenty of threads on here covering this question...

Try the "search" although ive found it pants recently...

I run Castrol Transmax Z synthetic automatic transmission fluid in mine as you cant get the orignal Nissan/Toyota stuff... Not cheep @ £160 for a drum though...

The other options are Royal Purple or Mobil-1...

Hope this helps....

Si...