Long-haul truckers and diesel engine enthusiasts had to rethink their entire operations in 2010 when the Environmental Protection Agency mandated selective catalytic reduction technology. Selective ...

For many years, owners of three-quarter and one-ton pickup trucks enjoyed the fact that there was no smog equipment on their trucks. But in 2008 the EPA required diesel particulate filters on all ...

If you regularly drive a modern-day diesel-powered vehicle, chances are, you know what Diesel Exhaust Fluid (DEF) is. A crucial component used by most modern vehicles with diesel engines, DEF — which ...

The short answer to why Diesel Exhaust Fluid doesn't work in the cold: It freezes at 12 degrees Fahrenheit. Comprised primarily of deionized water and urea, DEF serves to help make large diesel ...