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 ...

Two truck owners react to DOJ's recent shift away from criminal pursuit of delete shops and emissions tampering. Both emphasize why they "deleted" to begin with: Performance, fuel efficiency, "insane" ...

The federal government will not pursue criminal charges for DEF/DPF tampering, but truckers should hold off on buying a ...

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

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

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

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

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

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

Under the new measure, the EPA is requiring detailed warranty, failure rate and repair data from major diesel engine ...