Diesel fuel has undoubtedly taken a lump or two over the last decade-and-a-half. But even Volkswagen’s infamous ‘Dieselgate’ scandal couldn’t completely derail diesel engines as a viable, more efficient alternative to those run on traditional gasoline. A few years before those VW shenanigans, the desire for cleaner diesel even led to the invention of Diesel Exhaust Fluid, an additive designed to help reduce the emission of harmful NOx (nitrogen oxides) in the exhaust created from burning diesel fuel. The additive is, however,
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