Diesel Question

[Kenmotorist]

I have older diesels, '94 Chevy 6.5 turbo. They're pigs at highway speed, but get 17mpg compared to 11 in my gas trucks.
If you need to accelerate to pass on the interstate, diesels are not for you. They're great pulling a load or for mileage at steady state, but passing is just not their forte.
They'll keep speed even with a load, but they don't pick up speed quickly.

True for larger capacity diesels but not the 3.0 duramax. It’s a light duty diesel tuned to behave like a gas truck but with stellar fuel economy