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Quote
DEF (Diesel Exhaust Fluid) is a specific composition of urea for application in transportation to reduce the amount of nitrogen oxides (NOx) emitted into the air by diesel engines. DEF is a high purity chemical, comprised of 32.5% urea and 67.5% de-ionized water.
It’s set by the US government. Premium is selling the sizzle instead of the steak.
Lynwood
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