![]() ![]() This technology was expensive to implement and added extra steps during the refueling process. Initially, many drivers and heavy vehicle manufacturers complained about DEF mandates. Running your engine with diesel in the DEF tank will destroy your SCR system and put you out of warranty for repairs. Simply drain the tank while the vehicle is idle and dispense the correct fluid. Moving your truck can cause the diesel to spread into the selective catalytic reduction system (SCR). It’s best to avoid moving your vehicle as well. The fluid will not damage your components unless the engine is operating. If you notice that you filled your DEF tank with diesel fuel accidentally, don’t start the engine. DEF will damage the fuel rail, pump module, and injectors. You should also expect your vehicle’s engine to experience a total failure. The potent mixture is incompatible with these components and can create thousands of dollars in damage. First, the diesel exhaust fluid will corrode your vehicle’s fuel lines. If you fill your DEF tank with diesel fuel, expect a few problems to occur. Keep an eye out for labels that read “DEF ONLY.” Green pumps indicate regular diesel, while blue pumps indicate diesel exhaust fluid. Most gas stations that dispense DEF provide signs that help you avoid pumping the wrong fluid into your tank. ![]() What Happens When You Accidentally Fill A DEF Tank With Diesel Fuel? This problem can leave a driver stranded on the side of the road until they refill their tank. However, eventually, the diesel engine will stop functioning altogether. Some vehicles allow the driver to “limp” their truck back home if their DEF tank is empty. This technology enables drivers to see when their tank needs more fluid. Most drivers refill their tanks with diesel exhaust fluid every three to four times they stop at a pump station.Īll diesel vehicles must include DEF systems with dashboard warning sensors. Various conditions may impact how frequently you need to refuel your DEF tank. Keep an eye on your mileage and stop to refill when your supply gets low. However, you should expect DEF to begin freezing at around 14 degrees Fahrenheit (minus 10 degrees Celsius). Unless you are exposing your supply to hot environments for several days, this problem will likely not occur. Some drivers worry that their diesel exhaust fluid will quickly evaporate because it contains mostly water. Remember that your vehicle’s engine will stop functioning if it consumes all the DEF in the tank.ĭEF products retain a shelf life of about one to two years when stored properly. ![]() However, it’s wise to keep a backup supply nearby in case some locations do not sell these products. You can buy DEF in gallon containers at some gas stations. The average truck will expend 2-3 gallons of DEF every 800 miles.Ĭonsider that some newer model trucks can travel up to 10,000 miles with a full tank (typically ten gallons) of diesel exhaust fluid. As a result, the vehicle emits less harmful gas into the atmosphere. ![]() Urea is a synthetic compound that changes into ammonia at high temperatures.Īn injection of DEF into the exhaust stream turns the NOx into water. Diesel Exhaust Fluidĭiesel exhaust fluid consists of deionized water and urea. Explore mobile diesel repair service options in the Bay Area to learn more about this technology. This post will help you understand this fluid and why it is so important. Today, the EPA mandates that all medium to large vehicles with diesel engines must have integrated DEF technology. In 2010, engineers introduced diesel exhaust fluid (DEF) as an effective after-treatment solution for selective catalytic reduction systems. Since 1970, the Environmental Protection Agency (EPA) has made significant efforts to regulate the emissions of nitrogen oxides (NOx) from heavy vehicles. ![]()
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