gearbox and reverser oil + filters change jd350 '67

[andyjd350]

Which oil should I put in the gearbox and reverser ?

My local Deere dealer said it's standard hydraulic oil is that right ?
The manual says Deer type 303 which I guess is rather out of date.

Do the gearbox and reverser share the same oil ?

Are there 2 separate drain plugs if they share the same oil - I can't see from the manual ?

Does the 350 have a filter for the gearbox too like a 450 ?

thanks

Andy