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DEF - Diesel Exhaust Fluid

Diesel Exhaust Fluid (DEF) is 32.5% solution of high-purity urea in de-mineralized water that is used with the Selective Catalytic Reduction system (SCR) to reduce emissions of nitrogen oxides (NOx) from the exhaust systems of diesel vehicles into nitrogen, water and carbon dioxide (CO2).  DEF is a clear non-hazardous liquid that is neither a fuel, nor a fuel additive and needs to be dispensed into a DEF storage tank which is on your diesel powered vehicle or power generator system. Tyree Oil is proud to be a member of the DeliveryONE network offering Air1® DEF to SCR customers throughout Oregon.  Air1® DEF is manufactured by Yara, the world’s largest manufacturer of DEF, and is certified by the American Petroleum Institute (API) to ensure DEF quality standards are maintained in accordance with ISO 22241 specifications. With the combination of Yara as our world class manufacturer and our partnership with the DeliveryONE network, Tyree Oil is able to provide the most competitive pricing and the highest standards in DEF supply and service in Oregon. Tyree Oil offers turn-key DEF solutions that go beyond just the product. Offering customers industry leading DEF approved storage and dispensing options to onsite training and technical support, Tyree Oil will ensure your company is using DEF with confidence. Air1® DEF is available in 1 gallon jugs, 2.5 gallon jugs, 55 gallon drums, 275 or 330 gallon totes, and bulk. Please contact your Tyree Oil representative at 541.687.0076 to discuss your Air1® DEF needs.