Mobil Delvac tractor hyd. fluid meets Kubota UDT-1 spec. as listed in the spec.
UDT2 Spec:
Gravity Degree API: 34.5
Viscosity @-40c, cp 16000
Viscosity @100c, cSt: 8.1
Viscosity @ 40c, cSt: 37
Viscosity Index: 199
Pour Point:, Cmax -42
Zinc% wt :0.1122
Mobil Delvac is available at Tractor...