Fleet operators with newer engine technology (2007-2010) for their vehicles should take note of several key factors when operating their fleets during the cold winter weather season. A new feature of 2010 engine technology is the presence of Diesel Exhaust Fuel (DEF). DEF is an ammonia-based fluid that circulates through the engine to Fleet Considerations for Winterthe system, you could experience issues with the engine that could ultimately cause your vehicle to breakdown.
During the cold weather, be sure to keep your truck remove waste particles from the emission system. Many fleet operators don’t realize that DEF begins to freeze below 32 degrees Fahrenheit. If the engine is not warm enough to keep DEF flowing through warm by:
- Driving it immediately once you start the vehicle — do not let it idle
- Plugging in the engine block heater whenever the truck is turned off in temperatures that dip below freezing
Finally, it is important that you do not overfill or put any other fluid inside the designated DEF tank.
For 2007 engine technology, there are several considerations as well. For example, historically fleet operators have started their vehicles and let them idle as a means of heating up the engine and truck prior to the driver’s departure. With new engine technology, you should never let your vehicles idle in this way.
Low vehicle temperatures and in general, engine temperatures when idling, can prevent the Diesel Particulate Filters (DPF) from reaching appropriate temperatures to convert soot to ash. As soot builds up, it could require a more frequent regeneration process for the vehicle and eventually clog the filter.
Always make sure to plug in your vehicles overnight to keep the engine warm.
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