The DEF Debacle: The Rise of “Deleting” and Warranty Wars
Diesel Exhaust Fluid (DEF) requirements, imposed under EPA emissions standards since around 2010, were supposed to deliver cleaner air through Selective Catalytic Reduction (SCR) systems. In reality, they have created a cascade of failures—faulty sensors, sudden derates, shutdowns, and skyrocketing maintenance—that plague farmers, ranchers, truckers, and equipment operators. These headaches …