Few engines have enjoyed as long a reign as this popular diesel.

What is a 5.9-liter Cummins diesel engine? Well, for hardcore enthusiasts, it's arguably one of the most popular oil-burners ever produced. Cummins engines were dominant in agriculture long before ...

The 5.9L Cummins diesel engine is best known for its time when it powered Dodge trucks beginning in 1989, and it's an engine that certainly helped propel the Ram into being one of the top pickup truck ...

Want to make an engine last a million miles? Drivers control only a few of the factors that make these engines more durable ...

We may receive a commission on purchases made from links. Diesel engines have gained ground on their gas-fueled counterparts in recent years thanks in part to diesel's greater efficiency and the ample ...

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.

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