Diesel Exhaust Fluid

What is DEF (Diesel Exhaust Fluid)?
Diesel Exhaust Fluid (DEF) is a non-toxic solution that transforms harmful Nitrogen Oxide (NOx) emissions into harmless water vapor and nitrogen for America’s diesel-powered vehicles that use Selective Catalytic Reduction (SCR).

What is SCR ( Selective Catalytic Reduction )?
Selective Catalytic Reduction (SCR) is an advanced active emissions control technology system that injects a liquid-reductant agent through a special catalyst into the exhaust stream of a diesel engine. The reductant source is usually automotive-grade urea, otherwise known as Diesel Exhaust Fluid (DEF). The DEF sets off a chemical reaction that converts nitrogen oxides into nitrogen, water and tiny amounts of carbon dioxide (CO2), natural components of the air we breathe, which is then expelled through the vehicle tailpipe.

What advantages are there to DEF and SCR technology?
In addition to reducing NOx emissions, the use of DEF and SCR technology will typically result in improved fuel mileage for most vehicles. The amount of improvement will vary based on your equipment. Many in the industry feel that 3 - 5% improved fuel economy will be realized using DEF and SCR technologies.

How will DEF be stored and dispensed?
DEF is stored in dedicated containers (must be stainless steel or poly tanks) and dispensed through highly specialized dispensing units. Using substandard equipment can contaminate the DEF and subsequently poison the SCR Catalyst.

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