The EPA is escalating its response to consumer complaints regarding DEF system failures, announcing a new investigation aimed at 14 major manufacturers.

On the heels of clarifying farmers’ right to repair their own equipment, EPA is escalating pressure on diesel engine manufacturers over ongoing Diesel Exhaust Fluid (DEF) system failures the ...

EPA demands DEF failure data from diesel makers. Investigation could force recalls and software fixes for engines already on U.S. roads. 30-day deadline set.

Add Yahoo as a preferred source to see more of our stories on Google. (Photo/Ram) Just two weeks ago, the head of the Environmental Protection Agency (EPA) made an extraordinary announcement: ...

The consequences can be dire when the diesel fuel is contaminated with DEF. In the more severe cases, the entire fuel system must be replaced, from the fuel fill pipe to the fuel injectors and ...

Diesel fuel has undoubtedly taken a lump or two over the last decade-and-a-half. But even Volkswagen's infamous "Dieselgate" scandal couldn't completely derail diesel engines as a viable, more ...

Diesel engines are known for several things. Power and torque are the biggest attractions, but there is another attribute that drivers like. They can rack up a lot of mileage without needing major ...

Maintaining optimal performance and ensuring compliance with emissions standards go hand in hand for operators of diesel trucks. Diesel Exhaust Fluid (DEF) is a critical component in achieving both.

This is the kind of question where we'd better talk about terms before answering it. That's because AdBlue is a brand name for what folks in the United States usually call diesel exhaust fluid — aka ...