Under certain conditions, the water in DEF can evaporate, leaving behind white crystal urea deposits. Over time, these crystals can build up, clogging system components and interfering with normal ...

Diesel, once a bastion of the future and a savior of fuel economy, has found itself in a very different place since the industry-shaking Diesel Gate incident of 2015. It went from what was seen as the ...

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 ...

The Environmental Protection Agency is requiring 14 major diesel engine manufacturers to provide detailed information about diesel exhaust fluid system failures that have affected farmers and truckers ...

Diesel Exhaust Fluid (DEF) is a crucial component in modern diesel vehicles, introduced to comply with US Environmental Protection Agency (EPA) regulations that began in 2010. It's a solution made up ...

Add Yahoo as a preferred source to see more of our stories on Google. DEF sensors will no longer be required following EPA policy. (Photo: Jim Allen\FreightWaves) Diesel Exhaust Fluid sensors will no ...

Depending on who you ask, “DEF” might as well be a four-letter word. The acronym stands for diesel exhaust fluid, a solution that breaks down nitrogen oxides and significantly reduces emissions from ...

A contributor to CarBuzz since April 2025, Ben also was a finalist in The Intercooler Young Writer Compition in 2021, has done a placement with AutoCar, and runs his own independant automotive blog.

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 ...