EPA targets truck engine makers on DEF system failures

The Trump administration is demanding warranty and failure data from top manufacturers in an effort to end truck engine shutdowns. The post EPA targets truck engine makers on DEF system failures ...
GM Authority

EPA To Investigate Diesel Engine DEF System Failures

The EPA is escalating its response to consumer complaints regarding DEF system failures, announcing a new investigation aimed ...
Pickup Truck Talk + SUV on MSN

EPA Forcing Diesel Engine Makers Reveal DEF System Repair History, Eliminate DEF?

Breaking news, the EPA is forcing engine makers to reveal the truth behind their DEF systems for repairs, warranty claims to see if they have improved. They are also looking at if they even need to ...
GM Authority

EPA DEF Investigation: Automakers May Need To ‘Fix’ Diesel Engines Already On U.S. Roads

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.
Yahoo

Diesel engine operators can exhale with EPA's new DEF guidance | Opinion

The U.S. Environmental Protection Agency, working hand in hand with the U.S. Small Business Administration, is providing relief for any farmer whose tractor has suddenly shut down mid-field, or ...
Pickup Truck Talk + SUV on MSN

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 exhaust fluid (DEF) system failures that have disrupted farming, trucking, and ...
AgWeb

More DEF Relief? EPA Takes New Action for Farmers and Truckers

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 ...
Motor Trend

What Is DEF and How Does It Work?

Long-haul truckers and diesel engine enthusiasts had to rethink their entire operations in 2010 when the Environmental Protection Agency mandated selective catalytic reduction technology. Selective ...
SlashGear

What Happens If You Put Diesel Exhaust Fluid (DEF) In A Diesel Tank?

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 ...
Morningstar

Engine Technology Forum Statement on EPA Announcement Regarding Diesel Exhaust Fluid (DEF) and Engines, Vehicles, and Equipment Using Advanced Emissions Controls

Washington, D.C., Aug. 12, 2025 (GLOBE NEWSWIRE) -- The Engine Technology Forum issued the following statement from Allen Schaeffer, Executive Director, on the announcement from the U.S. Environmental ...
AgWeb

Farmers, Truckers and Gear Heads Rejoice: EPA Rolls Out Streamlined Diesel Engine Fluid Guidelines

EPA is rolling out new guidance for manufacturers of farm equipment and other heavy-duty vehicles, removing regulatory red tape requiring diesel-powered farm equipment to reduce engine torque ...