The American Petroleum Institute (API) on Tuesday reported another week of crude oil inventory builds. This time, the build is extra large, at 5.213 million barrels for the week ending October 8, as U.S. crude inventories sit 66 million barrels below beginning of the year levels. Analyst expectations for the week were for a build of 140,000 barrels for the week. In the previous week, the API reported a surprise build in oil inventories of 951,000 barrels , compared to the 300,000 barrel draw that analysts had predicted. Oil prices were relatively flat on Wednesday in the runup to the data release, but WTI is still north of $80 per barrel, while Brent crude trades at more than $83. Both WTI and Brent were down .10% and .17%, respectively, at 3:30 p.m. EST. At 3:35 p.m. EST, WTI was trading at $80.55—a more than $1 gain on the week. […]