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The Environmentally Clean Advantage Compressed natural gas is the cleanest burning fuel operating today. This means less vehicle maintenance and longer engine life. CNG vehicles produce the fewest... link 1 year ago
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Fraction distillation of crude oil takes place to give its various components. Crude oil is formed by complex hydrocarbons which essentially are the decomposed form of things that have been buried... link 1 year, 8 months ago