I changed the front diff fluid on my 2021. Now all the diffs are fresh, t-case is fresh, trans has fresh fluid.
The dealer i purchased from did an oil change, so I'm going to let that ride til 3000 miles, then I'll drop in my own Amsoil 0W20. The coolant is around the 4 year mark. I did top it off a bit. It was maybe 1/2" below the seam on the coolant reservoir cap when I got it, about right for a 4 year old vehicle.