The 6.7L Cummins inline-six diesel has powered pickup trucks for 30+ years, evolving from 5.9L origins to today's 430hp Ram ...

You probably know how diesel engines work, but it's one thing to understand the theory and a whole different thing to ...

Chevy's 6.6L Duramax offers high performance and lousy MPGs. If you want a comparable diesel engine with better gas mileage, ...

There are lots of ways to tell the difference between diesel fuel and gasoline, but if you're comparing diesel and something ...

The inline-6 engine layout has its fans in the gas world, but it's the de facto standard design among diesel aficionados. Hardly surprising, as these engines are less complex than any V layout and ...

Volvo also moved from a seven-wave piston to a 14-wave piston to better mix air and fuel, which helps reduce soot and NOx. A ...

Advancements in CNG engine performance now rival diesel engines in power and torque, making them more attractive for commercial use. CNG trucks incur higher initial costs due to complex fueling ...

Searching for a new car but don’t want a hybrid or EV? We’ve got you covered with the 10 most fuel efficient non-electrified ...

Learn about the price differences between gas and diesel truck models and whether now is the right time to buy a diesel ...

If you own a truck with the 6.6L Duramax diesel, you already know what it costs to feed it. The engine makes 470 horsepower and 975 lb-ft of torque, and it will haul just about anything you can ...