A specific composition of urea for application in transportation to reduce the amount of nitrogen oxides (Nox) emitted into the air by diesel engines. DEF Is a high purity chemical, comprised of 32.5% urea & 67.5% de-ionized water. Selective Catalytic Reduction (SCR) Technology uses DEF to reduce NOx emissions to near zero. SCR is a well established, safe technology that is already used in the denoxing of power plants. Under temperatures below 12 degrees Fahrenheit at which DEF will freeze, trucks will be immediately operation throughout the DEF tank thawing process. There is no concern regarding thermal stress with the plastic DEF tank. Tanks have been extensively tested in a variety of extreme climates.


To Reduce Nox, a small amount of DEF is injected directly into the exhaust upstream of a catalyst.  The DEF vaporizes and decomposes to form ammonia (MH3), which in conjunction with the SCR catalyst, reacts with NOx to convert the pollutant into nitrogen (N2) and water (H2O)


SCR Provides better fuel economy. SCR Meets 2010 Vehicle Emission Standards for Diesel Engines. SCR improves engine lubricant and filter life. Increased power. Less wear on the engine. Reduced maintenance. Requires fewer regenerations. More optimized combustion. 2.5 gallons of DEF will yield over 800 miles of travel. SCR is a better solution for the planet.