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 engines can be more efficient than gasoline engines, but that's largely due to DEF. Here's what it does, how it helps, and what happens if you run out.

The modern world relies on vehicles of all kinds for everything from personal transportation to the facilitation of international trade. These vehicles — which range from passenger cars and SUVs to ...

It's no secret that diesel engines have experienced significant growth over the past two decades. Today, many manufacturers, including Subaru, Volkswagen, and Audi, are choosing diesel, as it is more ...

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 ...