EPA Proposal Could End DEF Derating For Diesel Engines

EPA Proposal Could End DEF Derating For Diesel Engines
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EPA Proposal Could End DEF Derating For Diesel Engines

The EPA is floating a major change to how diesel engines handle emissions trouble, and the big headline is simple: fewer forced slowdowns, fewer headaches for operators, and a lot more debate about what that means for air quality. The proposal would ease some DEF-related rules, end engine deratement for new highway diesel engines, and...