Transmission would take HyTran or a good generic brand (no yellow can) same with the steering clutches, Hydraulics 10W emgine oil, or AW32 hydraulic oil, finals 80-90 gear oil. engine oil I would use 15W-40 or a straight weight, green anti freeze. I had a 74 TD-8Efor years, a great machine. Late 70's they changed transmissions.
DWF