A Portuguese oil company, Galp Energia, plans to announce Wednesday that it is building a 6,500-barrel-a-day plant to make diesel fuel from vegetable oils using a method akin to refining oil. The ...

We may receive a commission on purchases made from links. Diesel engines help us accomplish a myriad of tasks every day. While it is true that diesel engines are more efficient than gasoline engines ...

The war in Iran has disrupted supplies of diesel, used to power trucks and heavy equipment, much more than gasoline, which is ...

Diesel engine exhaust contains pollutants such as nitrogen oxides and soot particles. Although governments from the late 1990s onward encouraged their uptake in the belief they were more ...