Just the normal oil / fluid changes, chassis lube etc. Completed the front axle rebuild about 4 years ago with all new bearings and seals (what a messy job!). PHH was done about 5 years ago with new OE thermostat and as stated in the "Bad" section, the cooling system is due for a full flush...
I no longer have the sway bars as I did not expect to be selling the truck.
Impractical as a DD cause it sucks gas and expensive to maintain. Damn thing takes 7qts per oil change and I've always run Mob1 or Royal Purple in it. The on road handling takes some getting used to but have driven...