I think you just proved that the resale angle is false with your own statement. If a new Hemi truck is 6-10k cheaper than a Cummins then seeing used ones 6-10k cheaper means you’re effectively getting the exact same price in the end.
Leaving emotions out of it.
Seeing used Hemi trucks for $6-10k cheaper than similar diesel trucks is the exact reason resale value has to be considered. How many people seriously buy a brand new truck and then keep it until it's no longer usable?
Any gas vs diesel discussion always revolves around how many miles a diesel owner must keep the truck until they "breakeven" with the similar gas truck (most discussions - similar to the video referenced - leave out resale value)
The fuel/maintenance cost per mile for the diesel is cheaper than a hemi. The maintenance costs for both will vary (dealer costs vs shade tree costs, filter change intervals, etc) but ultimately there is a point where the fuel and maintenance savings of the diesel over the hemi equal the additional upfront cost of the diesel.
What is that mileage threshold? 150k - 200k - 450k? As they say - your mileage may vary.
Data analysis: each mile a diesel owner puts on their truck, the operating costs for that mile are less to drive than if they were driving a hemi, but the diesel costs more
Real life: when someone sells their diesel at the 100k mile mark for the same $9-10k more than what they could've bought a hemi, that's not the only factor to consider....how much did they save in operating costs over a hemi to get to that 100k mile mark? $3k-4k...$8k?
The more you tow with the diesel the quicker the savings add up.
Fast forward to 10:20 on this video...yeah I know its GM, but it's the same discussion...and yes, they leave out the resale value as well...ha