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BlueDEF Diesel Exhaust Fluid

Walthall Oil Company is proud to supply high-quality BlueDEF Diesel Exhaust Fluid to a wide variety of diesel customers. BlueDEF is trusted by fleet owners across the country for the complete, end-to-end solution that keeps their vehicles moving and reduces downtime due to product impurity and supply issues.

Benefits of Choosing Walthall as Your DEF Supplier

  • Timely & Consistent Deliveries
  • Highest Quality Products
  • Access Tools to Maximize Efficiency
  • Customer-Focused Team

Our DEF Capabilities & Solutions

Walthall Oil Company offers BlueDEF deliveries ranging from 2.5-gallon containers to large bulk deliveries with our dedicated BlueDEF bulk truck. Our strict quality control procedures allow us to ensure that our BlueDEF product is of the highest integrity and conforms to ISO Standard 22241.

Our experienced team provides equipment solutions to meet your growing demands for Diesel Exhaust Fluid. As the usage of this product is expanding, we also offer a full line of equipment products ranging from 330-gallon totes to bulk DEF storage and dispensing options.

Let Us Meet Your Diesel
Exhaust Fluid Supply Needs!
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What is DEF, and How Does It Work?

BlueDEF Diesel Exhaust Fluid is a non-toxic solution engineered to help diesel-powered vehicles reduce emissions and improve fuel economy. BlueDEF is the preferred technology used to meet the EPA’s 2010 mandate to reduce NOx emissions in diesel vehicles.

Engineered for use in Selective Catalytic Reduction (SCR) systems on diesel engines, BlueDEF Diesel Exhaust Fluid is comprised of high-purity synthetic urea and deionized water mixture that improves emissions and fuel economy. Injected into the exhaust stream with a specialized dosing module, BlueDEF’s water vaporizes, leaving ammonia molecules on route to the catalytic converter. Once there, it converts NOx molecules into harmless nitrogen and water vapor— resulting in cleaner emissions.