I have a new L2501 so Im not sure if it came with UDT2 or Super UDT, but my question is can I top off (mix) the standard (Kubota brand) UDT hydraulic fluid with whatever came in my new unit ?
If your new tractor is anything like my BX2360, when I did do the first change of hydraulic fluid, it got much quieter.
Like Wolfman said, they can be pretty noisy at first......
They all come prefilled with super UDT2 if in the USA. I do not know how the non USA tractors are done.
Mixing isn't much problem-unless you live in extreme cold climates or extreme hot climates. Then it can cause some noise-and sometimes some weird operation if the temp is extreme enough. RTV's especially-they should never use anything but super UDT2-and especially the RTV500!