Of the three United States automakers that offer diesel-powered heavy-duty pickup trucks, only two of those diesel engines are V8s. Those V8 diesel engines are the 6.6 Duramax found in offerings ...

A perennial competitor to Ford's Power Stroke V8 and Ram's Cummins turbo diesel inline six-cylinder ... scouring the internet for 6.6 Duramax fuel consumption figures in real-world driving conditions.