This month marks the 10th anniversary of the American Petroleum Institute’s voluntary program for certification of diesel exhaust fluid‘s quality. Essentially, the program is modeled on the API’s ...

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 ...

Adding diesel exhaust fluid to trucks has become fairly routine, despite some of the anxiety that came along with the debut of this new fluid a decade ago, needed to cut emissions using selective ...

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 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 ...