Use only sealed, clean, and dry containers to transfer DEF to the machine.Keep the container away from any containers of gasoline and diesel fuel.Place the container in a well-ventilated location, protected from direct sunlight.
Store the DEF in a well–sealed container.If the machine is stored or used above 86☏ (30☌), the DEF storage life will be reduced. DEF may be stored in the machine’s tank for up to 4 months. Temperatures above 86☏ (30☌) will cause DEF to break down into ammonia, increasing pressure in the containers. We recommend storing between 40-80☏ (5-27☌) to maintain shelf life. In winter, store above this temperatures. DEF Shelf Life – Storage TemperatureĭEF freezes at 12☏ (-11☌). Classified as Minimum Risk for TransportationĭEF is available at Kubota Dealers, Auto Parts Stores, Truck Stops, Truck Dealerships and Engine Distributors.The control system monitors for DEF contamination, and will send a warning signal to the dash and/or limit engine output according to the contamination level.ĭEF is a mixture of high purity synthetic automotive grade urea (32.5%) and deionized water that is used in Selective Catalytic Reduction (SCR) systems on diesel engines. When filling the DEF tank, do not allow any foreign substance to enter the tank. SCR-equipped machines have a separate DEF tank, identified by a blue cap. It sprays DEF (Diesel Exhaust Fluid) into the exhaust stream to convert nitrogen oxides (NOx) in the exhaust into nitrogen and water vapor. This system uses a catalyst in the exhaust system of applicable diesel engines. SCR stands for Selective Catalytic Reduction.
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