There are two types of oil pipeline: crude oil pipeline and product pipeline.
Cars need two types of oil; petrol for fuel and engine oil for lubrication.
Combine the two types of oil and drizzle into the food processor slowly to create an emulsion.
The tank cars were carrying especially volatile crude from the Northern Plains' Bakken region, which has a higher gas content and vapor pressure than other types of oil.
With margins squeezed, most have been reluctant to invest in the equipment needed to process other types of oil from Russia, Mexico and beyond.
In contrast with the limited information provided by Pennsylvania, Texas officials supplied a detailed 94-page spreadsheet almost immediately, listing all types of oil and gas related complaints over much of the past two years.
While that's well above the year's low of sub-$30 for both types of oil, prices are far under where they were in late 2014 when Opec embarked on its goal to seek market share.
Canadian officials have warned the European Union not to handicap the tar sands oil of Alberta with a designation that declares it a dirtier form of energy than conventional types of oil.
But a State Department environmental impact report issued Friday notes that extracting, shipping and refining the Canadian oil would produce measurably more greenhouse gas emissions than other types of oil.
Founder Geraldine Howard has taken a sort of nose-to-tail eating approach here, in that, instead of compromising on quality (avoiding cheap rose and any synthetics, for example), she's simply chosen the less expensive types of oil, such as vitamin E, blackcurrant and apricot kernel.
As the debate over the construction of the Keystone XL pipeline continues in the United States, a Canadian trade delegation is insisting that Canadian oil extracted from tar sands — the product that would be transported by an expanded pipeline — should not be classified as being dirtier than other types of oil.
