Congrats.

Brand new diesel Ram?

Google and research the CP4 injection pump. Can be a real nightmare if it fails.

I'm on my 2nd diesel Ram. First was a 2004 HO bought in 2007, truck was bulletproof, sold it last spring at 200k running perfect but rusting badly.

Bought a loaded, used, low mile 2016 Ram diesel, so far so good. Very comfy, lots of buttons.

Haven't heard about not letting the truck warm up, what's the reason?
I use my remote start and let my truck run for 5 minutes before driving.

Be careful when filling DEF it makes a real mess if spilled.

I've been told to keep the fuel filters clean, my 2016 has 2 filters, changed them already, pretty easy.

I added locking fuel caps from Genos (fuel and DEF)

I run my exhaust brake all the time per many recommendations. Only downside is I think it hurts fuel mileage.

I add Power Service fuel treatment every time I fuel the truck.