Q. What is Diesel Exhaust Fluid (DEF)?
A. DEF is the reactant necessary for the functionality of the SCR system. It is a carefully blended aqueous urea solution of 32.5% high purity urea and 67.5% deionized water.
Q. What is Selective Catalytic Reduction (SCR)?
A. SCR is a technology that uses a urea based diesel exhaust fluid (DEF) and a catalytic converter to significantly reduce oxides of nitrogen (NOx) emissions. SCR is the leading technology being used to reduce deisel emissions.
Q. What is urea?
A. Urea is a compound of nitrogen that turns to ammonia when heated. It is used in a variety of industries, including as a fertilizer in agriculture.
Q. How will I know that the DEF product I purchase will work?
A. The DEF you purchase should state and display the certification of the American Petroleum Institute (API), German Institute of Standardization DIN70700, the International Organization for Standardization ISO 22241-1, and meet AUS – 32 specifications. This will ensure the proper purity and concentration (32.5%) of urea.
Q. How can I determine how much DEF fluid my vehicle will use?
A. The following website link can help estimate your vehicles usage:
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