The Cummins 5.9-liter diesel engine has powered Ram trucks since 1989. It went through a few changes over its lifespan, but which years should be avoided?

The 5.9-liter Cummins is diesel royalty. It's the reason thousands of Ram trucks from the late '90s and early 2000s are still climbing hills, pulling trailers, and terrifying Priuses in the fast lane.

Cummins diesel engines and the Ram truck combined forces some years ago, creating what some would describe as the best partnership since peanut butter and jelly. The first-gen Cummins engines cost a ...

When it comes to gas-guzzling engines, the American automotive industry is known for building some of the best V8s of all time. However, US manufacturers have also developed some legendary diesels, ...

The late 1980s were a very important time for consumer diesel pickup trucks, as the torque wars between the Big Three American auto manufacturers began ramping up. In the late 1970s and early 1980s, ...

One heavy-duty engine choice transformed a basic pickup into a platform that significantly reshaped diesel performance and ...