Hey, I'm new to the sight. I'm sure my questions have been discussed but i haven't stumbled on these topics yet:

How to buy a used diesel pickup thread?

Best Generation for millage? (packages)
Biodiesel compatibility?

Modifications that improve power and millage?
(aftermarket and DIY)

Additives (cetane? lubricity?)

recomended Filtration upgrades? (oil? Fuel?)

I need a larger vehicle for road trips, mostly highway, but need 4x4 for snow. This may become a work truck with a utility trailer.

Its great to take very thing but not to not afford to go anywhere.

THANKS!