Bought mine in 2003, my dealer said any good oil was good; didn't even stock SUDT back then. I get hoses made locally. You need to adjust valves at 800 hours.
I use the new SUDT on my GL.
If Kubota was as bad as some seem to think and JD etc. never had catastrophic failres, we would all be using the same brand. We have Kubota, JD, Kioti, Case and MF.