The phrase refers to the availability of Diesel Exhaust Fluid (DEF) dispensing systems at fueling locations in close proximity to the user. It specifically indicates the presence of DEF pumps designed for convenient replenishment of this essential fluid for diesel-powered vehicles. As an example, a truck driver searching for a location to refill their DEF tank while on the road might use this phrase to locate suitable service stations.
Accessibility to DEF at fueling stations is critical for the smooth operation of modern diesel engines equipped with Selective Catalytic Reduction (SCR) systems. These systems require DEF to reduce nitrogen oxide (NOx) emissions, meeting stringent environmental regulations. Convenient access minimizes downtime for vehicle operators and ensures continuous compliance with emissions standards. The increasing prevalence of diesel vehicles utilizing SCR technology has driven the expansion of DEF dispensing infrastructure at fueling locations.