Diesel engines across agriculture, trucking and construction have been sidelined by a tiny part that was supposed to keep the air cleaner. After years of complaints about failure-prone diesel exhaust ...

Add Yahoo as a preferred source to see more of our stories on Google. Will the ability to stop using DEF sensors impact its consumption level? (Photo: Shutterstock) If a truck driver wants to save a ...

New regulatory guidance for diesel engines could save U.S. industries billions of dollars for farmers and truckers, but clean-air advocates say it could pose a significant risk to public health. Lee ...

The Environmental Protection Agency announced on March 27, 2026, that it is removing the diesel exhaust fluid sensor requirement for all diesel equipment, a decision the agency frames as a direct ...