Retail U.S. gasoline prices are holding steady, but it remains to be seen how much of a spike to expect from a British pipeline outage, an analyst said. Motor club AAA reports a national average retail price for regular unleaded Tuesday at $2.46 per gallon, a slight decline from Monday, but more or less stable from last week. Until Monday, markets had given up some of the gains from November after the Organization of Petroleum Exporting Countries agreed to hold their production positions static through the end of next year. That decision moderated the price of oil, until Monday when pipeline operator Ineos said it closed a pipeline system […]