Well I have a different perspective on the discussion of gas v diesel in pickups and larger light trucks.
First of all I currently have -
2001 F250 7.3 bought new with 160K on the clock with no major repairs
2013 F350 6.7 with 150K on the clock with no issues what so ever
2014 F250 6.2 gas with 160K on the clock that we've replaced the exhaust manifolds on
2018 F350 second gen 6.7 with 34K on the clock with no problems (my personal truck)
2019 RAM 3500 with 10K on the clock - it's new ..
We have not experienced any issues with the DEF diesels in our pickups (knocks on wood..
). At one time I owned 3 - 6.0's and still occasionally wake up in a cold sweat at 2:30 AM on a Tuesday morning remembering those abortions.
In a heavy duty 3/4 or 1 ton truck, diesel is the only way to go IMO. Our '14 F250 6.2 gasser is a spare truck at the moment and will be sold. It's gutless compared to the '13 6.7 - absolutely gutless. The '01 250 7.3 is also a spare truck and the guys always pick it over the '14 250 gasser when they need another truck.
Of course there is around a $8500 premium for a diesel when you buy the truck new. However you get most of that back when you go to sell it in addition to the added performance while you've put 250K miles on it - pennies in the grand scheme of things.
The premium on the diesel engine initially and the extra cost of diesel over gasoline is a no brainer IMO over the lifetime of the truck. Hook up our 14K pan trailer with a 279 on it around 13K lbs total behind our '13 6.7 and then behind the '14 6.2 gas - the performance difference is no contest.
I'm not experiencing the "choked down EPA diesels" folks are talking about in the newer engines. Our '13 6.7 is a hoss and my '18 6.7 is an absolute hoss compared to the '01 7.3 - no comparison whatsoever. The Cummins in the RAM is just getting broken in so we don't have a lot of experience yet.
I can pull 14K behind my '18 6.7 like it's not back there. Seriously the truck will pull 14K up a steep grade as fast as you want it to go. Never owned a gas motor that will pull like that second gen 6.7.
This is my business plan and other plans may vary in mileage.