Well said.Just like all the rest of them, they find a company who makes oil to their spec (specifically for the transmission specs), and then they test it to work, but that doesn't mean there aren't better options out there, or more specialized oils. The JD stuff obviously works, it's also expensive and proprietary.
Kawasaki has their own oil for their own engines, they simply have an oil manufacturer make it to their spec, they test it and call it good. I don't run that oil in my kawi motors though, because there's better options than a semi synthetic.
Same goes for my hydro's on my hustler, they recommend using hustler hydro fluid. I run the amsoil stuff. It's not only cheaper, but has been tested on hydrogears extensively and is not a rebranded bottle of castrol 20w50
The motorcycling world is the same way, funny that was mentioned.
Go buy yourself some honda GN4 to put in your bike for 10 bucks a qt. I'll put something else in for half the price that is going to be a better oil, it just won't have the name honda on it. same with yamalube, can am fluid and all the other ones that are labeled with a brand name. I've actually found in my atv's that Shell Rotella runs better with wet sump and wet clutches than the honda stuff does. I have seen less wear, better life, and smoother clutch using rotella vs the GN4. But the honda engineers want you to put int he red bottle on the trans side. because it's expensive, and is red in color. But the clutch manufacturer recommends shell rotella?