Mumbai, Oct. 18 -- WTI crude futures stayed under $60 per barrel though it recovered a bit from a five-month low. Upside remained limited as US crude inventories surged by 7.4 million barrels last week, the largest rise since July. At 423.8 million barrels, US crude oil inventories are about 4% below the five-year average for this time of year, according to Energy Information Administration or EIA. The US crude oil imports averaged 5.5 million barrels per day last week, decreasing by 878 thousand barrels per day from the previous week. Over the past four weeks, crude oil imports averaged about 6.1 million barrels per day, 2.4% less than the same four-week period last year. Total motor gasoline imports (including both finished gasoline and g...