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By January of 2016, you'll see a new API diesel engine oil classification, designed to help meet federal greenhouse gas/fuel economy standards. In fact, you may, for the first time, see two separate categories
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UPDATED -- The American Petroleum Institute, which represents the petroleum industry, is suing the Environmental Protection Agency, challenging its mandate for the use of 1.28 billion gallons of biodiesel in 2013, a 28% increase from the 2012 requirement.
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