Diesel engines across agriculture, trucking and construction have been sidelined by a tiny part that was supposed to keep the ...

New guidance allows engine makers to replace problematic DEF sensors with NOx-based systems, aiming to reduce unnecessary ...

EPA’s latest move on diesel exhaust fluid systems aims to reduce unexpected derates and costly downtime, both persistent ...

While diesel-powered passenger vehicles are increasingly limited in the U.S., they remain vital, especially for those in the ...

EPA is removing DEF sensor requirements to end costly equipment shutdowns and save farmers an estimated $4.4 billion annually ...