The Trump administration is demanding warranty and failure data from top manufacturers in an effort to end truck engine ...

Truckers blame DEF for shutdowns and big repair bills. Now, the EPA wants data from manufacturers that could reshape DEF ...

The Environmental Protection Agency is requiring 14 major diesel engine manufacturers to provide detailed information about ...

The federal agency is demanding failure and repair data from manufacturers to "hold [them] accountable for the continued ...

Following Monday’s right-to-repair announcement, EPA is demanding DEF failure data from engine makers, targeting shutdowns ...

EPA asked manufacturers for info in hopes to "PERMANENTLY eliminate the deratements ENTIRELY," agency boss Lee Zeldin said.

The Environmental Protection Agency is asking diesel engine makers to provide information about diesel exhaust fluid system failures as it considers changes to emissions regulations.

Diesel Exhaust Fluid (DEF) is a crucial component in modern diesel vehicles, introduced to comply with US Environmental Protection Agency (EPA) regulations that began in 2010. It's a solution made up ...

The U.S. Environmental Protection Agency is working to fix a long-standing headache for diesel truck and equipment operators: power cuts triggered by low diesel exhaust fluid levels. New rules will ...

The modern world relies on diesel fuel for everything from personal transportation and hauling products and goods across the country to powering construction equipment and farming implements. While ...