Detroit Diesel has produced many classic engines, but the "Screaming Jimmy" two-stroke is likely the one with the most ...

This 2011 Cascadia with EPA 2010 DD15 engine, above, is a customer demo unit already in revenue service. We drove it first. We liked it a lot.

Detroit’s new DD5 diesel is a 5.1L engine designed for urban delivery/service applications in Class 5-6 Freightliner M2 106 trucks. Photos: Jack Roberts Take a glum Midwestern sky, add a hefty helping ...

Detroit Diesel’s two-stroke engines earned their “Screaming Jimmy” nickname the hard way, with a piercing exhaust note and relentless mechanical clatter that turned work sites, logging roads, and ...

A key enabler is the newly redesigned aftertreatment system, which uses trusted components in a smarter and more efficient ...