DEF is a key component in lowering pollutants emitted from diesel engines, helping to reduce harmful emissions. Long-haul truckers and diesel engine enthusiasts had to rethink their entire operations ...

The B6.7 gasoline engine does away with DEF and active regens since Cummins utilizes a 3-way catalyst for emission control. Kenworth said the Cummins gasoline engine provides diesel-like performance ...

Long-haul truckers and diesel engine enthusiasts had to rethink their entire operations in 2010 when the Environmental Protection Agency mandated selective catalytic reduction technology. Selective ...