DEF is the reactant necessary for the Selective Catalyst Reduction System (SCR system) function. DEF is required for proper aftertreatment operation of your emissions system. It is a carefully blended aqueous urea solution of 30% high purity urea and 70% de-ionized water.

Your machine's operation and maintenance manual contains information on DEF including contamination control, and the proper storage. Poor DEF quality can result in performance, aftertreatment, and operational concerns.

This week, equipment inspections were discussed, as it is important to make sure there are no issues with the equipment and ensure everything is working properly prior to use.

Please remember: If you don't do an inspection every day, you are putting yourself, and others, at risk of harm.