2+ day, 7+ hour ago  (419+ words) With the EPA's recent removal of Diesel Exhaust Fluid or DEF sensor requirements and the accompanying loss of speed and shutdowns due to sensor malfunctions, the motor carriers around the nation are relieved to have one less hurdle to productivity....

2+ week, 2+ day ago  (908+ words) Farmers frustrated with diesel exhaust fluid (DEF) shutdowns may see fewer breakdowns under new EPA guidance, though the agency's new guidance on DEF stopped short of eliminating the emissions systems altogether. EPA did not eliminate the DEF rules, which have…...