diesel exhaust emissions

Diesel produces more smog than gasoline, study says

| October 24, 2012

Diesel engines produce nearly 15 times the amount of one of the main ingredients in smog than gasoline-powered engines, says a recent study by the University of Cal-Berkeley. The study was in part funded by the ...

Navistar sues EPA again over SCR rule

Jack Roberts | July 15, 2011

Navistar alleges nitrogen oxide emissions skyrocket when drivers don't keep diesel exhaust fluid topped off.

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