Thank you - help me understand "boil off moisture or fuel contaminates" even cold I suspect there are low quantity gases in the crankcase. When I start the car, and as it warms - the crankcase pressure is controlled by the pvc system. When really hot, ans underway the oil is being agitated - where does this "boiling off" take place - perhaps aerate?
As it was taught to me; Moisture will build up in the engine when it first starts, as will unburnt fuel to some extant. Then, as the oil heats up, the volatile contaminants will evaporate. As the PCV should keep the crankcase at a slight vacuum, the evaporation "boiling off" occurs at a lower temperature than it would outside of the engine.
I do annual oil changes regardless of miles, but assuming the 1,000 miles weren't done in 2 mile trips, you could stretch a bit, but I would not go much over 18 mos or so...but that's me.
Very nice vehicle, I came very close to buying a '16 LR4, wound up w/ a '17 RR HSE w/ the turbodiesel. Enjoy!