* US gasoline stock build sparks selling * Weekly EIA data due at 1430 GMT * Weaker dollar to support prices (Recasts, updates prices, previous SINGAPORE) By Chris Baldwin LONDON, June 24 (Reuters) - Oil dropped to under $69 a barrel on Wednesday, falling back after U.S. industry data showed gasoline reservoirs swelled unexpectedly. By 0842 GMT, U.S. crude CLc1 for August delivery was down 33 cents at $68.91. London Brent crude LCOc1 fell 35 cents to $68.45. American Petroleum Institute (API) data on Tuesday showed inventories of gasoline surged 3.7 million barrels, well above the predicted 1.3-million-barrel increase, as refiners raised their utilisation rates and imports rose. [ID:nN23611991] The U.S. governments's Energy Information Administration data on Wednesday was expected to confirm the API's view [EIA/S] "We're seeing potentially the third week in a row of increased gasoline stocks, which is a cautious sign, and would indicate that demand conditions are not that strong, and the U.S. driving season is not panning out as expected," said Mark Pervan, senior commodity strategist with ANZ Bank. Oil prices were likely to be supported, however, by a softer dollar. The dollar tumbled to its lowest levels for a week against the euro on Wednesday, as markets braced for the Federal Reserve to dampen expectations for higher interest rates at the end of its meeting later in the day. [USD/] Oil prices have more than doubled since last winter's low $30s as investors have begun pricing in expectations of an economic recovery that should boost consumption. The Commerce Department will release U.S. May durable goods orders at 1230 GMT. Economists polled by Reuters expected a fall in orders of 0.6 percent versus a rise of 1.7 percent in April. U.S. new home sales for May were expected to rise to 360,000 annualised units versus 352,000 in April, a Reuters poll showed.

Source