EPA’s unwinding of the Obama-era endangerment finding could amount to the largest deregulation in history. One positive outcome for farmers is the change it could mean for the use of Diesel Exhaust ...

The U.S. could soon experience a severe shortage of diesel exhaust fluid (DEF), impacting U.S. drivers already hit with soaring fuel prices. DEF is a solution made up of urea and de-ionized water that ...

Adding diesel exhaust fluid to a truck isn't the big deal some thought it would be when selective catalytic reduction first came on the scene. But DEF quality can still be a big deal. Adding diesel ...

Urea tanks will be standard equipment for most new diesel trucks, buses, cars, and sport utility vehicles (SUVs) manufactured in the United States after Jan. 1, 2010. An automotive grade of urea will ...