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 a 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.

Walthall Oil Company Offers BlueDEF

Walthall Oil Company is proud to supply high-quality BlueDEF Diesel Exhaust Fluid manufactured by PEAK 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 down-time due to product impurity and supply issues. Walthall Oil Company offers BlueDEF deliveries ranging from 2.5 gallon containers, 55 gallon drums, and 330 gallon totes, as well as large bulk deliveries with our dedicated BlueDEF bulk truck. Walthall Oil Company’s strategically placed locations, paired with our use of wireless tank monitors, allow us to make the most efficient and timely deliveries for our customers. Our strict quality control procedures allow us to ensure that our BlueDEF product is of the highest integrity and conforms to ISO Standard 22241.

BlueDEF Equipment OfferingsDEF Tote

As a newer product on the market, the experts at Walthall Oil Company are prepared to educate our customers on DEF and provide equipment
solutions to meet their growing demands for Diesel Exhaust Fluid. As usage of this product is growing, we can offer a full line of equipment products ranging from 330 gallon totes to bulk DEF storage and dispensing options.

Contact Walthall Oil Company for DEF Solutions

We invite you to choose our most convenient location and call us today to discuss your DEF needs.

  • Macon, GA  800-633-5685
  • Atlanta, GA  770-458-7399
  • Camilla, GA  229-336-8086
  • Jacksonville, FL  904-619-4946



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