DEF is a key component in lowering pollutants emitted from diesel engines, helping to reduce harmful emissions. Long-haul truckers and diesel engine enthusiasts had to rethink their entire operations ...

Diesel exhaust fluid (DEF) is not volatile—it’s noncombustible, nonhazardous and not a pollutant—but if contaminated or improperly managed, it can have significant consequences for engine emissions ...

Diesel exhaust fluid (DEF) is not volatile—it’s noncombustible, nonhazardous and not a pollutant—but if contaminated or improperly managed, it can have significant consequences for engine emissions ...

Diesel owners who have wrestled with warning lights, sudden power loss or even complete shutdowns tied to diesel exhaust fluid systems may finally be getting some relief. The U.S. Environmental ...

Long-haul truckers and diesel engine enthusiasts had to rethink their entire operations in 2010 when the Environmental Protection Agency mandated selective catalytic reduction technology. Selective ...