1249 miles now on my machine and just completed the 3rd engine oil and sub-transmission oil changes (100, 600, and 1200 mile intervals).
During this oil change I did add
Lucas Oil Heavy Duty Oil Stabilizer to my sub-transmission oil. I added 300 mL of Lucas Oil Stabilizer of the 1.3 L to fill it. My primary reasoning is to improve the overall lubricity and shifting smoothness. I haven't ridden it enough yet to say whether or not it seems to make a difference, but the stabilizer is like molasses so once it coats those gears I can't imagine it not helping. Since the sub-trans is, essentially, just a transfer case with gears and the clutches don't contact the sub-transmission oil I don't foresee any issues, but time will tell.
My prior RZR experiences had me checking wheel bearings, brake pads, and the prop shaft/carrier bearing that doesn't exist 🙌. Brake pads still appear to be 40-50%, wheel bearings are nice and tight, and obviously there's no prop shaft/carrier bearing to fool with. To say this makes me extremely satisfied would be an understatement...this is one of the primary reasons I jumped ship as quickly as I did to the Talon and hopefully I'll get thousands more trouble-free miles.
Update RE: the Krash cage - still awaiting completion and the windshield frame is being laser cut by another business he works with. He's planning to use the laser cut frame from mine as a template to make the option available going forward on future customer orders. I'm more than willing to wait for quality work, though.