Billy, I don't know or really care where JD or for that matter Kubota get their oil from. Whatever it is I imagine it is sufficient for the purpose and allows them a nice markup. That is why I figure it is a fairly cheap oil relabled so as to maximize profit. I could be wrong.
To answer the question, if it were relabled Mobil 1 then I would have to ask is it more or less expensive than Mobil 1 off the shelf? That would then decide for me which I would use but I seriously doubt it is Mobil 1. A pretty package does not a good oil make.
I was in Spangles last night for a shake after rocketing down a narrow road that actually has a curve in it. Oh, this is cool, Univ Kansas scientifically determined that a pancake was .955% flat and that Kansas was .9975 flat thus Kansas is "Flatter than a Pancake. /forums/images/graemlins/cool.gif Anyways, the restarant has all that old memorbilia all along the walls and everwhere. Old car adds, Route 66 stuff and all sorts of old Filling Station stuff. I was sitting beneath an artfully arranged display of Shell X100 oil. It had a yellow can. Some more was in a red can. These where the paper cans /forums/images/graemlins/cool.gif. There was all kind of Marathon and Sinclair. Hey, does anyone remember Arco Graphite oil. It was pitch black, looked like tar--it was not on the market very long /forums/images/graemlins/crazy.gif. Oils come and go in fashion, since the mid 70's though there has been one King Of Oil, Mobil1. I bet 30 years from now when I am really for real an old man and I go to that restarant there will be cans of Rotella or Unitella or Armadilla or Quacker Stale Cracker veggie oil or what have ya but no cans of Mobil 1--why--cuz if there is still internal combustion engines in our vehicles the oil in them and for sale on the shelves at the future Wally World will be Mobil 1, of course, along with whatever "fashion" oils that might be in vogue /forums/images/graemlins/smirk.gif or being sold by the latest pyramid scheme /forums/images/graemlins/shocked.gif. J