Can I use SUDT2 in B7800 HST?

[sixdogs]

I picked up some SUDT2 for a HST change in my B7800 since I thought UDT was good, SUDT better and SUDT2 best. Go with the best I figure.
Also thought that SUDT was being phased out in favor of SUDT2. Can anyone confirm this so I can make sure I do the right thing?
Is SUDT still being made and will it be made side-by-side with SUDT2?
Is any of my thinking correct?

In the past I changed to JD trans fluid and there is more gear whine than there used to be. Time to change back.

 

[WaxMan]

Go with the best it's not that much more, and it's better.

 

[sixdogs]

Go with the best it's not that much more, and it's better.

So is SUDT2 the best? I'm confused by the SUDT and SUDT2.

 

[smweatherman]

Yes, SUDT2 replaced the SUDT. I read on the Kubota site that it is 75% synthetic. Fully compatible with UDT and SUDT.

 

[JOHNTHOMAS]

If your buying (have HST) and SUDT2 is available, buy SUDT2. If you have several gallons of SUDT on hand, like I do from past purchases, then use the SUDT without concern. I believe SUDT2 is replacing SUDT. UDT can be used in front axle or non HST tractors but I would use ONLY SUDT or SUDT2 for HST. The whine is loud enough in HSTs using SUDT/SUDT2 but I've heard here that it is worse with UDT and some have said it has made the trans (HST) more sluggish.
Every thing isn't about better or less better, some things are just made for certain applications/uses which can then make one better than the other no matter the cost.
Some greases are "better" (more expensive also) than other greases but in some applications the more expensive better grease will not do any "better" job than a cheap grease. So, is one "better" than the other if it doesn't perform any "better"?
Same principle appies to motor/engine oils.