The aerodynamic improvements, inspired by aerospace engineering, aim to reduce long-haul drag, fuel consumption and carbon ...

Ultralow sulfur diesel (ULSD) fuel has been integrated into the worldwide fuel infrastructure to help meet a variety of environmental regulations. However, desulfurization alters the properties of ...

In an unrelated action, California’s gasoline excise tax, which is adjusted annually, increased 1.6 cents per gallon on ...

No immediate hike in California gas prices will occur, but Democrats and Republicans in the Legislature fear the effects of ...

Cummins has built an empire powering the heavy-duty work truck and other machines of industrial might. Here are the most ...

The backstory: Gov. Gavin Newsom’s office issued a fact-check memo defending the rule and saying the impacts are exaggerated, ...