Here’s my .02 cents on Diesel trucks:
Disclaimer: I have a Chevy 2500 with a gas 6.0 litre. I tow a ski boat and a sub 10,000 pound travel trailer and it does just fine, although its a fucking gas whore.
Upside of Diesel vs. Gas:
Diesels are awesome for towing and get a little better mileage than a gasser (but the milage gap is closing with the new engines because of all the power the new Diesel’s make and because of emission standards and because Gassers are getting better milage.)
Diesels have a much longer engine life.
You can chip a Diesel and get crazy power numbers.
Downside of Diesel:
The up-charge is steep on the front end and it takes a long time to recoup over a comparable gas engine, its like $12,000 on paper more but likely much more because they don’t discount them or offer incentives like they do on gassers.
Diesel stinks and gets all over your hands every time you fill up.
Diesel is more expensive.
Diesel engines cost more to maintain.
You have to buy cow piss (which is moderately expensive) to add to the new Diesel trucks because of emissions.
Repairs on a Diesel engine are crazy expensive compared to a gasser if something does go wrong out of warranty. The turbo systems are crazy expensive to fix if something goes wrong.
Although the engine will last forever practically, the rest of the truck still ages the same as a gasser and pretty soon you have an old truck that is falling apart all around the engine.
If you chip a Diesel, this is hard on the rest of the truck and you will have repairs sooner than if you didn’t.
Diesel trucks need to warm up and run for a while or they sludge up. They are not good for frequent quick runs to the store.
Conclusion: For my money, a Diesel truck only makes sense if you regularly tow in excess of 10,000 lbs. or drive tons of highway miles. If I ever upgrade to a big 15,000 + pound toy hauler, I’d go Diesel for sure.