Diesel engines can be more efficient than gasoline engines, but that's largely due to DEF. Here's what it does, how it helps, and what happens if you run out.

Since 2010, diesel-powered on-highway trucks in North America have been using selective catalytic reduction (SCR) as an exhaust after-treatment technique to control nitrogen-oxide (NOx) emissions. And ...

When 2010 rolls around in about nine months, all automakers that offer diesel vehicles in the United States will need to meet new requirements that will mandate a 90 percent reduction in nitrogen ...

Maintaining optimal performance and ensuring compliance with emissions standards go hand in hand for operators of diesel trucks. Diesel Exhaust Fluid (DEF) is a critical component in achieving both.

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 ...

I recently read a pretty startling statistic—in the next year, the off-highway engine market will consume about 20 million gallons of Diesel Exhaust Fluid (DEF). In the next five years that number is ...

If you're short on time, here's what you should know. The primary claim made in the viral Facebook post was that Union Pacific was placing an embargo on Pilot Flying J. That supposed embargo would ...

The Environmental Protection Agency announced it is taking actions to ease the frustration and disruptions around sudden “derates” of diesel engines when they run out of diesel exhaust fluid or have a ...

Diesel engines and their impact on the environment, in contrast to gasoline engines, is a matter of serious dispute when entering the debate about the cause of and measures against anthropogenic ...

Lee Zeldin is administrator of the U.S. Environmental Protection Agency. Kelly Loeffler is administrator of the U.S. Small Business Administration. The U.S. Environmental Protection Agency, working ...

Catalyzed Diesel Exhaust Fluid (Cat-DEF™) is one of three SwRI-developed technologies recognized by R&D Magazine as one of the most significant innovations of 2021. The Cat-DEF™ technology is a ...