Can the improved 6.7-liter Cummins diesel V-6 engine and ZF 8-speed automatic transmission handle a cross-country towing beatdown?

Curious what engines power Kenworth trucks? Learn about the types of engines they use, their horsepower, and what makes them ...

Cummins diesel engines are terrific ... with a few exceptions. There were a few years when their quality just wasn't up to ...