The cost saving of moving from truck stop to tote supply is approximately 30%. DEF can also be bought at the pump from Pilot Flying J, Love's Travel Stops and other truck stop chains. Bulk volumes, which are delivered directly to fleet terminals, are the cheapest way to buy DEF. Packaged supply, which comes in 1, 2.5 and 4 gallon jugs, is the most expensive method on a per-gallon basis, followed by 55 gallon drums and 275 or 330 gallon totes. The price of Diesel Exhaust Fluid (DEF) will depend on your location, supply method and the volume of fluid that you purchase. How much can I expect to pay for Diesel Exhaust Fluid (DEF)? This means that if your truck has a fuel efficiency of six miles per gallon and a dosing rate of 3% it will use approximately 1 gallon of DEF every 200 miles.įeedback from a number of fleets suggests that the dosing rate is slightly lower than originally predicted by manufacturers, at around 2.0-2.5%. Medium- and heavy-duty vehicles have a dosing rate of 2-3%. How much Diesel Exhaust Fluid (DEF) will my truck consume?ĭiesel Exhaust Fluid (DEF) consumption is measured as a ratio of diesel fuel use, normally termed the "dosing rate" or "treat rate". See our Fleet Supply and Retail DEF Search pages to find a supplier near you. Where can I buy Diesel Exhaust Fluid (DEF)?ĭ has extensive listings of truck stop and retail locations where you can purchase Diesel Exhaust Fluid (DEF) in jugs or at the pump, as well as fleet suppliers that can deliver to your facility. The ammonia breaks down dangerous NOx emissions produced by diesel engines into nitrogen and water. DEF is sprayed into the exhaust stream by an advanced injection system and then converted into ammonia on a catalyst. In automotive applications SCR delivers ammonia using a urea solution called Diesel Exhaust Fluid (DEF).
The chemical reactions used in SCR systems require a constant feed of ammonia gas. SCR technology uses a catalyst system to break down dangerous NOx emissions produced by diesel engines into nitrogen and water. What is Selective Catalytic Reduction (SCR)? It is stored in a separate tank, typically with a blue filler cap. DEF is not a fuel additive and never comes into contact with diesel. This system is called Selective Catalytic Reduction (SCR) and can be found on 2010 and later model year trucks and many diesel pickups and SUVs. DEF is sprayed into the exhaust stream of diesel vehicles to break down dangerous NOx emissions into harmless nitrogen and water. Frequently Asked Questions Overview What is Diesel Exhaust Fluid (DEF)? What is Selective Catalytic Reduction (SCR)? Diesel Exhaust Fluid (DEF) use Where can I buy Diesel Exhaust Fluid (DEF)? How much Diesel Exhaust Fluid (DEF) will my truck consume? How much can I expect to pay for Diesel Exhaust Fluid (DEF)? What will happen if my truck runs out of Diesel Exhaust Fluid (DEF)? Is there any danger of filling the Diesel Exhaust Fluid (DEF) tank with diesel and what problems will it cause? If I switch Diesel Exhaust Fluid (DEF) suppliers, what should I do with the fluid which remains in bulk storage tanks and do I need to have them cleaned out? Selective Catalytic Reduction (SCR) technology Why are manufacturers using Selective Catalytic Reduction (SCR) to meet the 2010 guidelines? Are there any heavy-duty truck manufacturers that don't use Selective Catalytic Reduction (SCR) technology? How does Selective Catalytic Reduction (SCR) affect a vehicle's performance? What fuel saving can I expect from a truck equipped with Selective Catalytic Reduction (SCR) technology? When was Selective Catalytic Reduction (SCR) technology first used? Diesel Exhaust Fluid (DEF) handling Is Diesel Exhaust Fluid (DEF) corrosive? Do I need to wear protective clothing when filling up the DEF tank? What should I do if a spill DEF? What is the shelf life of Diesel Exhaust Fluid (DEF)? A large part of Diesel Exhaust Fluid (DEF) is de-ionized water, do I have to worry about the tank or other parts of the Selective Catalytic Reduction (SCR) system freezing? Does DEF evaporate, and what happens if it does? What is the difference between agricultural urea and the urea used in Diesel Exhaust Fluid (DEF)? What happens if I ingest Diesel Exhaust Fluid (DEF)? What happens if I inhale Diesel Exhaust Fluid (DEF) fumes?ĭiesel Exhaust Fluid (DEF) is a non-hazardous solution, which is 32.5% urea and 67.5% de-ionized water.
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