Diesel Exhaust Fluid

ROC is a reliable and competitively priced diesel exhaust fluid (DEF) distributor for your diesel fleet. DEF is a non-toxic, high purity solution of urea and water that helps to reduce NOx emissions in Selective Catalytic Reduction (SCR) systems. Offering various sizes such as 2.5 gallon jugs, 55 gallon drums, and 330 gallon totes as well as customized delivery schedules makes ROC the preferred provider for this essential product!