DIESEL EXHAUST FLUID

The cost of DEF depends on the location you buy from, the supply method and howmuch you purchase at once. In terms of consumption, DEF consumption is measured by ratio of diesel fuel use. The typical DEF consumption rate is about 3 percent per diesel fuel gallon, meaning that your DEF tank is a lot less than your diesel fuel tank and you will use about 2.5 gallons for every 350 or so miles you drive. Caring for DEF has a lot to do with storing it. If you’re not a pump purchaser and you have containers of DEF at home or work, you need to be sure the DEF is stored in a tightly sealed package inside a well- ventilated storage area. The storage temperature can be anywhere between 12 and 86 degrees Fahrenheit, but the ideal, recommended storage temperature is between 40 and 80 degrees Fahrenheit. When stored at the proper temperature, DEF’s shelf life is two years. If you live somewhere that gets really cold at certain hours of the day or during certain times of the year, you need to find an effective storage and heating solution for DEF to keep it from being ruined. Most publicly available DEF is a 32.5% concentration. At that concentration, DEF freezes at 12 degrees Fahrenheit. Though it may gel up at temperatures below 12°F, quality isn’t affected by the freezing or thawing out after it freezes. Should your DEF freeze, warm the storage container it’s inside until it thaws the DEF back into its normal liquid state. You also want to keep DEF out of direct sunlight to keep it from overheating. If your DEF and its container do overheat, simply chill the container, which should be tightly sealed, by spraying it with cold water until it returns to the desired temperature range. Storing DEF above 77°F and in direct sunlight has been shown to reduce the shelf life from 2 years to less than 1 year. The Definitive Guide to DEF Caring For It 6