The PACCAR MX DEF software update raises final inducement speed to 25 mph and extends the repair window for MX-11 and MX-13 ...

Paccar will begin to update the software on trucks equipped with MX-11 and MX-13 engines following the Environmental ...

Paccar will roll out updated software for Kenworth and Peterbilt trucks equipped with MX-11 and MX-13 engines to reflect revised U.S. Environmental Protection Agency guidance on diesel exhaust fluid ...

EPA has proposed ending diesel exhaust fluid-related engine derates, replacing the gradual dialing back of truck performance ...

Cummins and PACCAR are updating diesel engine software to give operators more time to address certain DEF-related issues ...

Cummins and Paccar are rolling out software updates tied to revised EPA guidance on DEF inducement. The changes aim to ...

These two major engine manufacturers are aligning with relaxed EPA guidance related to sudden derates due to DEF/emissions ...

Updated diesel engine software gives truck operators more time to address emissions-system issues while staying compliant ...