I drained all the fluid.
I looked at the bucket last night and it says can be used where M1129 and 1129A.
The data sheet says explicitly
Massey Ferguson - ESN-M2C, 134B, C, D
Agco, White, AllisChalmers - PF821XL, M-1127B, M-1129A, M1135, M1141,
J20A, B , C (Hy-Gard, Quatrol), D (Low Temp HyGard), J14B (303 Fluid), J14C, J21A
JIC 143, 145,145, 146 MS-1204, MS-1205 (TFD), MS 1206 (PowerGard), MS-1207 (Hy-Tran Plus), MS-1209 (Hy-Tran ESN-M2C, 134A, B, C, D; M2C86B, M2C41B, M2C48B, M2C53A, FNHA-2-C-200, FNHA-
2-C-201, PF821XL, M-1127B, M-1129A, M1135, M1141,
Permatran III, Q-1722, TO-2, UDH Fluid
As I said it's all drained out and I'd tend to trust this board more than some oil MFG but is everyone still convinced this is a fluid problem??