Detroit Diesel and Cummins are two of the market leaders in the world of diesel engines today, from pickups to semi trucks.

As a result, Detroit Allison built their first four-stroke engine in 1989, known as the Series 60. In the years following its release, the Series 60 became the best-selling four-stroke commercial ...

It first debuted back in 2010, making it all the more impressive that the engine has been able to stay at the top of Detroit's product stack until now. The DD16 is a hulking 15.6-liter inline-six ...

Detroit Diesel announced a number of changes to its family of diesel engines to meet the Greenhouse Gas 2014 (GHG14) regulations passed last August by the U.S. Environmental Protection Agency and ...

That's just what the company has in store to show off this week at the Detroit Auto Show with three new powerplants that it says will improve fuel economy by 25 percent by 2014. The three engines ...

HDT Senior Editor Jack Roberts takes to the streets of Chicago for a first hands-on look at Detroit's new DD5 four-cylinder, 5.1L engine.

Detroit Diesel's two-stroke engines were its bread and butter for decades, but the four-stroke Series 60 and DD15 were a big departure. How similar are the two?