Westport Fuel Systems posted declines in fourth-quarter and full-year net income as the equipment maker advanced its joint venture with Volvo Group and announced the sale of its light-duty business.

Diesel equipment operators would have more time before an empty DEF tank leads to power loss, under new EPA guidance. Details ...

Not all pickups are built equally, especially when it comes to resale value. When it comes to buying a new truck, most people expect some depreciation. But for certain pickups, the value drop over ...

The Environmental Protection Agency is changing regulations about diesel engines that could help Oklahoma farmers and truck ...