Thanks for posting the UOA. It looks good. What is your oil change interval for the transfer case and differential(s)? Ditto for coolant and brake fluid. I recently picked up an AWD Sienna which is going to be my version of a camping van. Had 74K on the odometer so I went ahead and had the transmission fluid flushed. Next for me to do is the drivetrain oil, i.e. the transfer case and rear differential. Coolant is okay, but will probably change that out this summer. Hope to take some of my first trips this Spring. I enjoy reading your entries.