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.

Navistar is suing to force the Environmental Protection Agency to go back and re-test SCR engines for compliance with clean air standards and other aspects of the 2010 emission rule. In the suit, ...

Green Granite with its 2010 SCR diesel is owned by Mack and was loaned to Haines & Kibblehouse for testing. It has worked well and fuel economy is encouraging. MP7-405 Maxidyne diesel looks like a ...