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

The EPA questions if diesel DEF de-rates are essential for emissions compliance. Could changes be on the horizon? Discover ...

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

The U.S. Environmental Protection Agency is ramping up its pressure on engine makers to fix persistent persistent diesel ...

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

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

Breaking news, the EPA is forcing engine makers to reveal the truth behind their DEF systems for repairs, warranty claims to ...

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

Removing an emissions device, while no longer a criminal matter, still represents risk for haulers. One responded to EPA and DOJ's recent moves on DEF faults and diesel derates, even questioning ...

I recently read a pretty startling statistic—in the next year, the off-highway engine market will consume about 20 million gallons of Diesel Exhaust Fluid (DEF). In the next five years that number is ...

SPRINGFIELD, Mo. (KY3) - Diesel users such as semi-truck drivers and RV owners will soon be paying more for diesel exhaust fluid (DEF). According to RV Business: “Modern diesel requires the injection ...

Tips for troubleshooting poor acceleration, stalling, trouble maintaining speed, warning lights Why is my diesel truck losing ...