The EPA is escalating its response to consumer complaints regarding DEF system failures, announcing a new investigation aimed ...

Modern diesel submarines seem to break a basic rule of engines: they keep moving underwater even though diesel power needs ...

If diesel engines need air for combustion, then how can submarines use them? Here's what you need to know about the clever ...

Diesel-powered submarines present a challenge that may seem paradoxical at first. Their engines require ...

The Trump administration has announced it will no longer criminally prosecute “diesel delete” cases of truck owners altering ...

The EPA is considering eliminating the "limp mode" rule for diesel engines, a feature that drastically slows trucks and ...

The emissions system at the heart of the global Volkswagen diesel mess comprises many complex components, all of which have to work perfectly and consistently all the time, or the vehicle will fail to ...

A dual-fuel conversion system can offer some of the fuel- and emissions-saving benefits of a natural gas engine without going out and buying a brand-new truck. Recent changes in Environmental ...

Today, biodiesel is considered one of the cleanest alternatives to petroleum diesel, the main culprit responsible for greenhouse gas emissions on medium- and heavy-duty trucks. Biodiesel, readily ...