After nearly five years and $1.5 billion in development, the new heavy-duty Detroit Diesel DD15 engine was unveiled Oct. 19 at the company’s plant in Redford, Mich. The six-cylinder, inline DD15 ...

Detroit Diesel has been in the engine-building game for over 85 years, and in that time they have established themselves as one of the most reputable diesel engine manufacturers in the country.

Detroit Diesel says the first of its anticipated new worldwide series of engines is the DD15, a 14.8-liter inline six-cylinder model that will debut in North America in spring of 2008. The company ...