There is currently not a Kubota UDT2 fluid, it was replaced by the fully synthetic SUDT2. I believe that UDT is “crude oil“ base, SUDT was blend of crude/synthetic and SUDT2 is fully synthetic.
So currently the Voraga UDT2 will (probably) not be the same as Kubota SUDT2 since Kubota UDT2 was...