The EPA is escalating its response to consumer complaints regarding DEF system failures, announcing a new investigation aimed ...

Diesel has had a rough go of it during the last few years, but an increasingly commonplace technology is working to change the fuel's image and make diesel vehicles viable for the future. Kyle Hyatt ...

Nick Davis of Freedom Dumpsters LCC spoke with federal officials about an issue he was having with diesel exhaust fluid (DEF) systems, which led to a rule change from the U.S. Environmental Protection ...