1) I wasn't trying to taunt you; it was a suggestion - not a mandate. All owners are free to do as they choose. I was trying to encourage you, not start an argument. My apologies if that was misinterpreted. I most certainly do encourage the OCI extension when the data supports it, but more importantly, I practice what I preach.
2) Why are you stuck on the "... or one year" mantra? The entire point of UOAs is to eschew the artificial limits of time and distnace, and use the direct condition of the lube and inferred condition of the equipment to be your guide. I have many examples to show that the calendar is worthless in that regard.
3) I have not seen any statistically significant evidence to show that "severe" use actually makes any difference in a UOA against macro data analysis. Just because you short trip things or would tow heavy does not assure wear-rate is going to jump past the standard deviation response; to the contrary it rarely moves much at all in most any example.
If it is your position that the JD lube is good to 25k miles (and I would contend there is reaasonable evidence to support your claim), then why stop when the calendar prescibes some artificial limit?