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EPA moves to force engine makers to fix notoriously faulty diesel DEF systems, citing major savings for farmers

The U.S. Environmental Protection Agency is ramping up its pressure on engine makers to fix persistent persistent diesel exhaust fluid (DEF) system failures that have disrupted farming, trucking, and ...
Transport Topics

EPA Gives Engine Makers 30 Days to Provide DEF System Data

The data collected will allow EPA to independently evaluate ongoing system failures. As of Feb. 2, engine manufacturers have 30 days to provide EPA with data on model years 2016, 2019 and 2023 ...