Hard to believe people would actually do some of those things
The knowledge of man is finite. The stupidity of man is infinite.
Take your time, particularly when pushing the limits of the machine and while you’re getting used to it. Read the manual thoroughly. It ain’t a MF 135 (which is a great tractor, by the way). Read the manual again.
If it is a HST: the cooling for the transmission is the flow of hydraulic fluid through the hydraulic variable displacement piston motor that provides torque to the wheels. More pedal and lower range provides more cooling than higher range and less pedal.
On the other hand, Tier 4 DPF needs heat to work so it needs rpm. Does not like idling. Does like 1800+ rpm.
Common rail engine: don’t run out of fuel. Can be a bit of a PITA to bleed adequately.
Auto regen: let it do its thing when it wants and everybody stays happy. Defer regen or don’t increase throttle as instructed and keep ignoring its request to regen: things eventually get ugly.
If it’s like mine and has no clutch at all: engage the PTO at idle. It doesn’t ease in like you can with a clutch. With the hydraulic drive, there’s plenty of torque even at idle, there’s just not enough flow to make high rpm.
Use Kubota filters. That may get a comment from someone, but they’re just not that much more expensive than any other comparable filter.
Check all fluid levels when you first get it. I had no issue but seems to be a too common complaint on here that new tractor arrived from dealer with no oil in front axle. You don’t want to catch that at 50 hours.
Other than that, it’s the standard keep the loader as low as practical, don’t hitch towed loads above the axle, don’t put gas in a diesel... stuff you already know because it’s common to any tractor.