Diluted oil sands crude no more likely to leak from pipeline than other oil, study finds

June 25, 2013 The diluted form of heavy crude from Canadian oil sands fields is no more likely to leak from a pipeline than other forms of oil, an arm of the National Academy of Sciences reported Tuesday. The finding, after an extensive study by the National Research Council, refutes a claim by opponents of the controversial Keystone XL pipeline extension, who contend that the