The EPA questions if diesel DEF de-rates are essential for emissions compliance. Could changes be on the horizon? Discover ...
The federal agency is demanding failure and repair data from manufacturers to "hold [them] accountable for the continued ...
Truckers blame DEF for shutdowns and big repair bills. Now, the EPA wants data from manufacturers that could reshape DEF ...
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EPA moves to force engine makers to fix notoriously faulty diesel DEF systems, citing major savings for farmers
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 ...
The Environmental Protection Agency is requiring 14 major diesel engine manufacturers to provide detailed information about ...
EPA asked manufacturers for info in hopes to "PERMANENTLY eliminate the deratements ENTIRELY," agency boss Lee Zeldin said.
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What Is DEF and How Does It Work?
DEF is a key component in lowering pollutants emitted from diesel engines, helping to reduce harmful emissions. Long-haul truckers and diesel engine enthusiasts had to rethink their entire operations ...
HOLLY, Mich., April 16, 2025 (GLOBE NEWSWIRE) -- A diesel truck, car or SUV that is losing power and fuel economy, shutting down unexpectedly, and/or has a DEF warning light illuminated is probably ...
Following Monday’s right-to-repair announcement, EPA is demanding DEF failure data from engine makers, targeting shutdowns ...
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