Introduction to Diesel Exhaust Fluid (DEF)

In January 2010, the U.S. Environmental Protection Agency to meet requirement set by the Clean Air Act brought in new emissions standards requiring medium and heavy-duty vehicles to significantly reduce engine emissions, particularly NOx and particulate matter. Vehicle manufacturers decided to use a technology called selective catalytic reduction or SCR to meet these standards.  Continue reading “Introduction to Diesel Exhaust Fluid (DEF)”