Basic rules for modern diesels.
Avoid idling.
Avoid short trips and city driving.
Work them, they need to be worked for the emissions to work properly.
Use OEM fuel and air filters from a reputable source. Geno’s Garage is who I’d recommend for online purchases. The air filter needs to be a 53034051AB.
12 month, 15K miles, or when the truck tells you (whichever happens first) for fuel filter and oil/filter changes.
Lots of opinions on oil and filters. I prefer a quality synthetic 5w-40 and the Donaldson DBL7349.
DEF doesn’t last long in HOT climates, so think about that when buying it if you’re not driving it often. Either check the date code or buy it from a pump, I prefer a pump.
But mostly, just enjoy how it tows your trailer.
Are you in a cold weather state?
Oh yeah, the dealership is only for warranty work and even then double check what they do. Do your own maintenance, or go to an independent mechanic. Keep your receipts for warranty purposes.
It's should be about 10k if you don't idle alot. You can find the percentage left on both under vehicle information on the dash
It should be about 15K for oil and fuel filters.