U.S. gasoline stocks are rising much faster than normal at the start of the year, threatening to leave refiners struggling to clear an overhang of motor fuel later in the year. Gasoline stockpiles rose by almost 21 million barrels during the first 27 days of 2017, compared with an average increase of less than 12 million barrels at the same time of year during the previous decade. Stocks have only risen this fast on one other occasion in the last 10 years, and that was in 2016, when refiners and blenders ended up with a large surplus which lingered through the summer ( tmsnrt.rs/2koIvZX ). Stocks hit a seasonal record of 257 million barrels on Jan. 27, according to an analysis of data from the U.S. Energy Information Administration. Stocks are now 4 million barrels higher than in 2016 and almost 26 million barrels higher than the 10-year seasonal […]