When billions of dollars are spent yearly by truckers and farmers because of diesel exhaust fluid issues, the calls for policy action regarding DEF have been loud. The process of reevaluating DEF ...

Using AI chatbots for even just 10 minutes may have a shockingly negative impact on people’s ability to think and problem-solve, according to a new study from researchers at Carnegie Mellon, MIT, ...

The U.S. Environmental Protection Agency (EPA) last week issued guidance that drops the requirement for Diesel Exhaust Fluid (DEF) sensors as part of a truck's aftertreatment system and allows truck ...

EPA approved guidance allowing diesel manufacturers to replace urea quality sensors with NOx sensors in DEF systems. The agency said faulty DEF sensors are a significant source of warranty claims and ...

The White House came alive today with the Great American Agriculture Celebration, but the real fireworks happened when President Trump announced a massive regulatory shift that is set to change the ...

The U.S. Environmental Protection Agency on Friday said it is dropping the requirement for diesel exhaust fluid (DEF) sensors as part of a truck's aftertreatment system in favor of monitoring actual ...

Which diesel exhaust fluid is best? When you have a diesel vehicle, besides adding fuel, you need to add diesel exhaust fluid. Diesel-powered vehicles require diesel exhaust fluid to reduce engine ...

The Iowa House advanced a bill Monday that would allow farmers to disable the diesel exhaust fluid, or DEF, systems required by federal emissions laws. House File 2529 would require manufacturers of ...

Iowa House advanced a bill Monday that would require manufacturers of farm equipment with diesel exhaust fluid, or DEF, systems to provide diagnostic and repair information to farmers so they could ...

The United Kingdom is blocking the Trump administration from using its military air bases for a possible attack on Iran over concerns that a strike could violate international law. A report by The ...

The U.S. Environmental Protection Agency (EPA) is escalating its response to consumer complaints regarding Diesel Exhaust Fluid (DEF) system failures, announcing a new investigation aimed at major ...

Forbes contributors publish independent expert analyses and insights. Hugh McIntyre covers music, with a focus on the global charts. Def Leppard kicked 2026 off with a bang by releasing a new single ...