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Winter Operation Tips for Truck Drivers Who Use PEAKHD DEF

Posted by admin on March 29, 2019 in Business Products & Services |

All modern diesel vehicles are designed to lower nitrogen oxide emissions as a means of reducing their environmental impact. The vast majority of commercial truck manufacturers have chosen to do so by installing selective catalytic reduction (SCR) technology on their vehicles.

SCR systems use diesel exhaust fluid (DEF) to reduce the amount of nitrogen oxides released into the atmosphere. Read on to find out about how these systems work and what considerations drivers and fleet managers should have in mind when preparing their trucks for winter driving.

How it Works

Modern diesel engines ensure full combustion of soot and fuel by maintaining a lean burn air-to-fuel ratio. This leads to the emission of nitrogen oxide in non-SCR compatible vehicles, allowing these harmful pollutants to enter the atmosphere. SCR systems are designed to substantially reduce the nitrogen oxides being released by using DEF, which contains high concentrations of ammonia, into water and nitrogen.

Storage Concerns

SCR systems are uniquely sensitive to chemical impurities, so it’s important to ensure safe transport and storage of diesel exhaust fluid. While DEF is non-toxic and safe to handle, it should be stored only in approved containers to avoid corrosion. When stored in cool, dry, dark areas, it has a shelf life of up to two years.

Winter Operation

While DEF can safely be frozen and thawed prior to use, it is important to note that the fluid must be sufficiently thawed prior to operating a truck. In most vehicles, this can be accomplished by using the heat from the engine to melt the fluid, which begins to thaw at just 12 degrees Fahrenheit. However, this method can take up to an hour, and the 2010 EPA emissions requirements require full coolant flow in an hour and ten minutes.

Some manufacturers have developed a second option for thawing DEF more quickly by incorporating electrical heaters directly into the tanks. These are able to melt DEF in a matter of minutes, but it’s important to note that the heaters should never exceed 140 degrees Fahrenheit, as DEF begins to decompose at temperatures around 140 degrees.

Learn More Today

When purchasing DEF for bulk storage, fleet managers should ensure that they are buying only high-quality fluids and they are storing them properly. Check out PEAKHD online to learn more about one supplier that can help today.

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