I have a 2007 with 5.9L CTD
I use Rotella Dino Oil 15W-40
Fleetguard LF16035 fuel filter (NO FRAM junk)
I change oil at 7500 miles and fuel filter at 15K
Air filter...when dirty. No set mileage/depends on where/what I have been
48RE tranny...service every 25K or sooner
Rear diff......I change at 25K. Schedule suggests 15K but I run an extended volume cover so I go 25K
Change out that coolant.....S/B done every 100,000 miles/60 months (Special GOLDEN coolant)
Along with serpentine belt
Adjust valve lash at 135K
2004 Manual.........use Schedule 'B'