DEF is a key component in lowering pollutants emitted from diesel engines, helping to reduce harmful emissions.

Eight months and 16,000 miles of diverse driving have proven that as we’ve averaged 18.8 mpg in our diesel Silverado ZR2.

Small speed reductions and mindful driving can improve diesel mpg by 3–5%, saving fleets thousands in fuel costs. Smart route ...

It has been a decade since the VW Dieselgate scandal broke out, but the saga continues – with other automakers.