Remember all that flushing of the rad I did? Well like 11-12 flushes and it was still pretty rusty. Lent the truck to my buddy for the weekend and he hooked it up to the rad cleaning machine at work.
The aftermath is some squeaky clean coolant!

He also hooked it up to the intake service machine to clean up the likely caked up valves.

Honestly I have noticed the truck runs smoother and the throttle is more responsive.
With all that done, I would say that the maintenance is entirely up to date!
Please enjoy this picture of how glossy the Sonax is still holding up:
