DEF stands for diesel exhaust fluid, and it is mandatory for all semi-trucks to use it in the United States. Here's why and ...

In this video, we explore the consequences of accidentally adding DEF fluid to a diesel tank, which contaminated the entire fuel system of a low-mileage truck. A professional assessment was conducted ...

The final day that Crozer EMS will be on the street is fluid. The final day will be coordinated with Delaware County and its health department. There is no firm date at the moment, said Lori ...