Diesel engines that are past warranty concern me. If anything goes bad on them it costs a fortune to replace. You often hear that diesels will go 500,000 miles. How many trucks do you see for sale with 400,000, or even 300,000? If you do find one, how much money did the owner need to put in to get that mileage? The manufacturers give the same warranty for gas as diesel. Shouldn't the diesel have a longer warranty if it is problem free?
I own an RV with a diesel. If anything goes wrong, I walk away from it. Not worth the high expense to repair, and that is if you can even find a good diesel mechanic. I was told at a car dealership that the only pickup truck diesel engine that is rebuildable is the Dodge. It has replaceable engine cylinders, (sleeves).