DEF- The Importance of Proper Handling
Diesel Exhaust Fluid (DEF) – An aqueous fluid made of 32.5% urea and 67.5% deionized water.
Due to the increase changes of emission restrictions and guidelines. DEF is showing up more & more in equipment. However DEF needs to be carefully handled to prevent contamination of the DEF system and engine failure. Listed are some key points about DEF”DEF is non-hazardous, if spilled, simply flush with water.Tier IV final engines above 75 HP require DEF.DEF fluid freezes at 12 degrees Fahrenheit.DEF fluid has a shelf life of 12-18-24 months depending on environment.Only use dedicated storing and dispensing containers. Do not use funnels or bottles that have been used for other liquids.Cannot be store in direct sunlight.DEF cannot be topped off with water.DEF systems utilize a DEF quality sensor that detects contamination.If DEF becomes contaminated, engine will derate and damage to the SCR (exhaust system) will occur, and lead to potential engine failure.Do not reuse DEF containers.DEF can only come in contact with titanium, rubber, plastic and stainless steel.DO NOT start a diesel engine if DEF has been added to the diesel tank.
Below is a short video by Thoroughbred Diesel on the proper filling procedure of DEF: