Chevron 54-0000-11 Blue Leaf Diesel Exhaust Fluid (9.46L)
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Diesel Exhaust Fluid (DEF) is an aqueous urea solution blended with 32.5% high purity urea and 67.5% deionized water. The market for DEF is being created due to the emission requirements promulgated by the EPA to meet the Clean Air Act specifications. As depicted below, the progressive reduction in diesel emissions has driven tremendous changes in engine requirements over the past 25 years. These efforts have been focused on reducing particulates, sulphur, and NOX emissions. DEF is focused on meeting the 2010 requirement for NOX emissions reductions. DEF solution is used in Selective Catalytic Reduction (SCR) to lower NOx concentration in the exhaust emissions of diesel engines.