Diesel exhaust fluid (DEF) is a critical component in achieving both optimal performance and compliance with emissions standards. To maximize the benefits of DEF, it’s essential to understand proper ...

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 ...

Diesel engines across agriculture, trucking and construction have been sidelined by a tiny part that was supposed to keep the air cleaner. After years of complaints about failure-prone diesel exhaust ...

The quality of the DEF going into your vehicle is as important as the quality of the engine oils or fuels used in your vehicles. When diesel-powered trucks sit idle for extended periods, it’s easy to ...

This story appears in the Oct. 19 print edition of Transport Topics. LAS VEGAS — As the deadline nears for implementation of the latest change in federal emission rules, truck makers and fleets are ...

There’s more to DEF—Diesel Exhaust Fluid—than meets the eye, according to Old World Industries, a leading supplier of the fluid required for EPA 2010 diesel engines to remain in compliance while out ...