Kubota G2000 cold hydro

[DLKubota]

I just upgraded from a Kubota G4200 to a G2000 (gas version fo the G1800,G1900) and for the most part am very happy, but I have a cold weather hydro question. On my older G4200, I could start it up in sub freezing weather (with a block heater and some glowing) and the hydro transmission would operate immediately. On the G2000, it needs to warm up for a couple of minutes before it will move. I replaced the fluid with Kubota's Super UDT ($$$) along with a new filter and saw only a minor improvement.

Is this normal for the G1800,G1900,G2000 series or should I be worried?

 

[sneaky_pete]

Never had that happen with my G1800, but it's never seen sub-freezing weather either. Close, but not below freezing.