DEF is a key component in lowering pollutants emitted from diesel engines, helping to reduce harmful emissions.

Navistar, Inc. said Tuesday it has started customer shipments of its first International DuraStar and International WorkStar vehicles with the company’s 9- and 10-liter engines with Selective ...

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 ...