OUTLOOK The improving economic scene, both here in the U.S. as well as worldwide, is the main driver of the current oil rally that has seen the commodity settling around the $80 per barrel level. But high levels of product inventories (particularly gasoline), along with still higher supplies, will limit any sustained crude gains, in our view. But way too many factors weigh on oil prices, from OPEC decisions and geostrategic tensions to the value of the U.S. dollar and seasonal variables, to definitively size up each one of them for their respective impact on prices.  In its latest release, the Energy Information Administration (EIA) reported a less-than-anticipated increase in crude stockpiles, which rose by 800,000 barrels for the week ending October 23. However, current crude oil stocks, at 339.9 million barrels, still remain 9% above the year-earlier level as well as above the upper limit ...