Diesel Exhaust Fluid (DEF) is a pure, aqueous solution of urea and water, to be used in new diesel SCR engine technology. DEF is API certified to guarantee product quality.
Koch Fuel is equipped to satisfy all of your DEF, diesel exhaust fluid, needs! Ensure you’re never without the DEF you require to keep your fleet operating as it should. If you have questions about the product we offer or would like information on our bulk delivery services, please don’t hesitate to get in touch with us.