Fluids (oils) for Oliver 550 diesel

What would be current recommendations for fluids (oil) in an Oliver 550 Diesel?
This is for a friend. Mine is a gas, so I'm not as well-versed for the diesel.

Transmission - SAE 85/90 or is SAE 140 okay?

Hydraulics - Tractor Hydraulic Fluid okay?

Crankcase - SAE 30 HD - Shell Rotella okay?

Steering - Cornhead Grease/Oil??
 
80-90 in rear end, 30 wt motor oil in hyd Res. Grease in the steering is good rather than oil in case seal weep-leak, motor oil what ever is good for your climate
 

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