Thanks, guys. Getting info on Kioti, even their dealers, is difficult. I went to their locator and put in five states - got nada. Did get a dealer today, in Maine, I think. He said six and a half for the oil change. As suggested, I'm putting in five, cranking it up, shutting it down and checking after it sits a while.
Thanks for mentioning Rotella synthetic. I don't change frequently time-wise, so that might be worthwhile.
I know that manual is around here somewhere. I found the separate one for the loader. Thought I'd found the tractor manual when I saw the big oragne Kioti on the front.