No, I'm not. I use Chevron Synthetic THF.
I purchase the Amsoil Synthetic Tractor Hydraulic/Transmission Oil SAE 5W-30. It's a real synthetic rather than a refined mineral oil. The Amsoil product exceeds the following specs.
AGCO/Deutz-Allis/Allis-Chalmers – PowerFluid PF-821 XL, 25741, 246634
AGCO White Farm (Oliver) – Q-1826, Q-1802, Q-1766B (UTHF), Q-1766, Q-1722, Q-1705, Type 55
Allison – C4, C3, C2
API GL-4
Case New Holland (CNH) – MAT 3505 (MS-1209), MS-1207 (Hy-Tran® Plus), MAT 3506 (MS-1210) (TCH Fluid JIC-145), MAT 3509 (MS-1230, M2C48C), Poclain Equipment high pressure systems, MAT 3525 (FNHA-2-C-201.00, M2C134D), MAT 3526 (FNHA-2-C-200.00 winter grade), MAT 3510 (MS-1317, GL-4), B-6, MS-1206 (PTF), MS-1205 (TFD-II), MS-1204 (TFD), JIC-185, JIC-144, JIC-143, B-5, M2C86B/C, M2C53A, M2C41B, M2CA/B/C, ESN-M2C77A, ESN-M2C41B, ESNM2C43, ESN-M2C48B/C, ESN-M2C53A/B, ESN-142A, ESN-M2C143, ESN-M2C92A, ESN-M2C159A/B/C, Renk-Doromat 873 or 874A/B Bus Automatic Transmission Fluid, Valtractores
Caterpillar – TO-2
Clark – TA 12, TA 18, HR 500, HR 600
Dresser CED – Trans/Hyd Fluid
Deutz-Allis – 25743, 272843
Deutz-Fahr
Sperry Vickers/Eaton – I-286-S, M-2950-S
Fendt (Non-Vario)
Fiat-Hesston – AF-87
Ford – ESN M2C86B, M2C86C, Fiat requiring M2C134D, FNHA-2-C-201.00
John Deere – J20C, J20D (winter grade), J14A/B/C, JDT303, J20A/B, J121A
Komatsu
Kubota – UDT/M80B
Landini – Tractor Hydraulic Fluid
Massey-Ferguson – M-1141 (Permatran® 821 XL, Formerly Permatran ® III), M-1110, M-1127A/B, M-1129A, M-1135, M-1138, M-1139, M-1143, M-1145
Parker Denison – HF-0, HF-1, HF-2
Sauer Sundstrand/Danfoss – Hydrostatic Transmission Fluid
Steiger – HTF (SEMS 17001)
Volvo – VCE 1273.03, WB101
Versatile – Recommended for use in Valmet, New Idea Power Units, Leyland Belarus, Specs 23M & 24M
ZF – TE-ML 03E, TE-ML 05F, TE-ML 06K, TE-ML 17E