Key to the care and feeding of today's latest engines is a mysterious fluid called DEF (diesel exhaust fluid). Following is some information about DEF to help you manage your Tier 4 equipment for ...

Diesel Exhaust Fluid (DEF) is made from a mixture of technically pure urea and purified water and must be handled and stored properly to preserve its quality. This is true for drivers filling up on ...

Manufacturers' required DEF derates will soon be less severe. Current equipment may enter limp mode and slow to 5 mph, or stop altogether until a DEF fault is cleared. The EPA's new guidance for ...

Consumption of diesel exhaust fluid across North America has been rising in recent years and is set to hit a milestone of one billion gallons by 2019, according to the newly published DEF Market ...

Diesel engines are known for several things. Power and torque are the biggest attractions, but there is another attribute that drivers like. They can rack up a lot of mileage without needing major ...

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

As most people are aware, the EPA signed the final rule introducing Tier 4 emission standards back on May 11, 2004 to reduce two key pollutants: particulate matter (PM) and nitrogen oxide (NOx) ...