Mechanics in the UK have a nickname for the sludge that shows up inside a neglected diesel engine. They call it “Black Death,” a thick, tar-like buildup that coats valve trains and chokes off oil ...

The Cummins 5.9-liter 6BT diesel became a legend in Ram pickups, work equipment, and marine use through durability and ...

Diesel engines lack the spark of gas engines, both literally and figuratively. They don't need a spark plug since they ignite the fuel using only compression, but also lack the 'je ne sais quoi' that ...

When people think of big engines, they usually think of regular gas engines, like Koenigsegg's 2,300-horsepower monster. However, if you think about it, there are many much bigger vehicles out there, ...