DEF: Those initials may have caught your eye at the auto parts store, dealership or even your local gas station. And if you happen to have a modern diesel car or truck, you may even have added to your ...

This is the kind of question where we'd better talk about terms before answering it. That's because AdBlue is a brand name for what folks in the United States usually call diesel exhaust fluid — aka ...

SPRINGFIELD, Mo. (KY3) - Diesel users such as semi-truck drivers and RV owners will soon be paying more for diesel exhaust fluid (DEF). According to RV Business: “Modern diesel requires the injection ...

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 ...

Diesel engines are disappearing from smaller cars and SUVs in the U.S. thanks to a series of emissions scandals since Dieselgate. But there are still plenty of heavy-duty pickups and larger trucks ...

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 ...

Since January 1, 2010, on-highway vehicles sold by any truck OEM other than Navistar have been equipped with a selective catalytic reduction (SCR) system using diesel exhaust fluid (DEF). “Therefore, ...

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 ...

Diesel exhaust fluid (DEF) doesn’t require a lot of attention, but with summer ready to heat up, precautions should be taken to protect the fluid from the impact of high temperatures, which can ...

A long-running diesel equipment headache is getting a regulatory fix in 2026, though the EPA's latest guidance also raises ...

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 ...

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 ...