DEF

Diesel Exhaust Fluid

DEF, or Diesel Exhaust Fluid, is a high purity solution of urea in water (32.5%) used to chemically reduce NOx emissions from trucks and buses powered by diesel engines. D.E.F. is contained in a separate tank and is sprayed into the exhaust gases.

Diesel Exhaust Fluid

DEF, or Diesel Exhaust Fluid, is a high purity solution of urea in water (32.5%) used to chemically reduce NOx emissions from trucks and buses powered by diesel engines. D.E.F. is contained in a separate tank and is sprayed into the exhaust gases.

Why use DEF?

Diesel Exhaust Fluid (DEF) is a new product required by many heavy-duty trucks, pickups, SUVs, and vans delivered after January 2010. DEF is used to destroy harmful emissions in the exhaust and meet the EPA’s latest strict environmental standards.

DEF is non-hazardous and consists of 67.5% de-ionized water and 32.5% urea, and is used in combination with Selective Catalytic Reduction (SCR) technology. It is sprayed into the exhaust and combines with a catalyst to break down NOx (a harmful pollutant) into nitrogen and water.

In January 2010 emissions legislation came into force which requires diesel vehicles to significantly reduce harmful emissions of NOx and particulate matter. A good way to meet these standards is to use SCR and DEF.

SCR technology offers many benefits, most importantly great fuel efficiency. On top of this, owners of SCR vehicles will enjoy greater reliability and a longer oil change interval, all of which adds up to impressive savings over the life of the vehicle.

In 2011 some agricultural, construction and forestry equipment was required to meet more stringent emissions standards and a number of manufacturers use SCR and DEF.

Why use DEF?

Eljay makes it easier for you to reduce harmful emmissions.

Diesel Exhaust Fluid (DEF) is a new product required by many heavy-duty trucks, pickups, SUVs, and vans delivered after January 2010. DEF is used to destroy harmful emissions in the exhaust and meet the EPA’s latest strict environmental standards.

DEF is non-hazardous and consists of 67.5% de-ionized water and 32.5% urea, and is used in combination with Selective Catalytic Reduction (SCR) technology. It is sprayed into the exhaust and combines with a catalyst to break down NOx (a harmful pollutant) into nitrogen and water.

In January 2010 emissions legislation came into force which requires diesel vehicles to significantly reduce harmful emissions of NOx and particulate matter. A good way to meet these standards is to use SCR and DEF.

SCR technology offers many benefits, most importantly great fuel efficiency. On top of this, owners of SCR vehicles will enjoy greater reliability and a longer oil change interval, all of which adds up to impressive savings over the life of the vehicle.

In 2011 some agricultural, construction and forestry equipment was required to meet more stringent emissions standards and a number of manufacturers use SCR and DEF.

LEARN MORE

Get the facts on DEF.

What is Diesel Exhaust Fluid?
How much does DEF weigh? Is DEF corrosive?
How many miles can my truck travel on one gallon of DEF?

USA DEF
Certified DEF

LEARN MORE

Get the facts on DEF.

What is Diesel Exhaust Fluid?
How much does DEF weigh? Is DEF corrosive?
How many miles can my truck travel on one gallon of DEF?

USA DEF
CERTIFIED DEF

Now you can fill up both your DEF and diesel tanks at the same time.

DEF “at the pump” is now available at all of our Eljay Oil Cardlock Sites as well as locations throughout the CFN Fuelman network.

  • 7707 E. Valleyway Ave

    Spokane Valley, WA 99212

  • 3813 E. Francis Ave

    Spokane, WA 99217

  • 16909 E. Euclid Ave

    Spokane, WA 99216

Diesel Exhaust Fluid (DEF) is a relatively new product required by many heavy-duty trucks, pickups, SUVs, and vans delivered after January 2010. DEF is used to destroy harmful emissions in the exhaust and meet the EPA’s latest strict environmental standards. In addition to protecting the environment, one of the most significant benefits of using DEF is the greater fuel efficiency.

API Certificate

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ISO Information
American Petroleum Institute

What is the American Petroleum Institute?

API Certificate

Click to learn more about our certifications and standard requirements in the industry.

ISO Information
American Petroleum Institute

What is the American Petroleum Institute?

Click for Safety Data Sheets and Product Data Sheets.

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SDS & PDS

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