Rotella is good, but I prefer Chevron Delo 400 LE 15w40. Year round. It meets the API classification SM for older engines, and still has a 1300 ppm zinc count, unlike Rotella, and is one of the few motor oils that still do. Higher zinc content is beneficial for our flat tappet 4.0 engines, whether during cam break-in or maintaining longevity because it reduces the metal-to-metal friction no matter what the age/mileage. Chevron Delo 400 is a diesel spec motor oil and I've been using it for years in my Jeeps, but especially in the stroker with a mild cam.
Filters? I use the extended length Purolators.