What would have me squeamish about this fluid is the underlined part of the specs they reference. The fluid meets or exceeds "similar" specifications to those. That sounds weird to me. Also some of those specs are out of date. Cat TO-2 is an old spec and covers many grade weights. And for SUDT2, it mentions pour point and anti- wear, but it could be missing a host of other things that it will not meet.
Its dyed dark orange though, that's a plus. SUDT2 is really hard to see in a sight glass.
I wouldn't be afraid to use it in an old gear drive tractor, but something like that will not go into my newer Hydro tractor.