El DEF es una solución líquida mezclada con 32,5% de úrea pura y 67,5% de agua des-ionizada. Conozcamos acá cómo funciona:
El DEF funciona dentro de los sistemas de reducción catalítica selectiva o SCR, inyectándose al escape del motor en donde forma amoniaco. Luego fluye al catalizador SCR, donde reacciona para formar nitrógeno y vapor de agua, reduciendo así los niveles de contaminación.
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Tips acerca del uso del DEF:
- Evita la contaminación del DEF.
- Súrtelo con un equipo de dosificación limpio, hecho con materiales compatibles.
- Deja un espacio libre del 10% de la capacidad del tanque, así evita el incremento de la presión en el interior a causa de la temperatura.
- No adiciones ningún fluido diferente al DEF.
- Usa siempre dosificadores limpios.
- Almacena el DEF en un lugar fresco, seco, bien ventilado y libre de la luz del sol directa.

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