this endeavour is their UltraClean Diesel LS9 UltraClean Diesel One of LS9’s premier products is its UltraClean diesel. This diesel product offers numerous benefits in comparison to both regular diesel fuel, as well as traditional biodiesel. LS9 diesel is above the competition in many varying facets including cetane number, sulphur content, aromatic compound content, cloud point and oxidative stability. In 2010, LS9 UltraClean Diesel was awarded status as an officially registered fuel by the United States Environment Protection Agency (EPA). This fuel contributes to a reduction in carbon footprint by 85% in comparison to other fuels. As a registered fuel, LS9's UltraClean Diesel can be sold commercially in the United States. Cetane Number (CN) A fuel’s cetane number is measurement of the combustion quality of diesel fuel during compression ignition. Fuels with higher cetane number have shorter ignition delays, providing more time for the fuel combustion process to be completed. Generally, diesel engines operate well with a CN from 40 to 55, whereas LS9 UltraClean has a CN of 70. In North America, most states adopt ASTM D975 as their diesel fuel standard and the minimum cetane number is set at 40, with typical values in the 42-45 range. In Europe, with a minimum cetane index of 46 and a minimum cetane number of 51. Premium diesel fuel can have a cetane number as high as 60 Sulfur Sulfur is a major contributor to the greenhouse gas sulfur hexafluoride (SF6), a potent greenhouse gas that the Intergovernmental Panel on Climate Change, has evaluated, with a global warming potential of 22,800 times that of carbon dioxide when compared over a 100-year period Sulfur hexafluoride is also extremely long-lived due to being inert in the troposphere and stratosphere, and has an estimated atmospheric lifetime of 800–3200 years. Due to these facts, it is very beneficial to contain low sulfur levels in fuel. LS9 diesel contains just over half (8 vs 15) of the sulfur Aromatic Compounds Aromatic compounds in fuel contribute to soot production. Therefore, they have been under investigation and restrictions. The California Air Resources Board (CARB) and the EU will have limits at 10% and 14% respectively, while the U.S. federal specifications limit aromatics to 35% Soot production plays a major role in smog and environmental concerns, causing for these restrictions to be put in place. LS9 UltraClean diesel has been shown to have no aromatic compounds, whereas fossil fuel