Now I'm really confused! I can't find in the manual where it says to use IH Hytran anywhere. Should I run Hytran in my JD 430 too? Those Deere guys will be pissed if they gotta go to an IH dealer to get fluid for their hydro's. What does IH say about using type F automatic transmission fluid? The maker of the hydro says it's okay to use. Oh, maybe IH, Deere, Steiner & Wheel Donkey want you to buy their overpriced oil for profit.
Here be the manual for the pump.
https://media.toro.com/servicemanuals/sd_15svc.pdf