Oil edges up on uncertainty over exports through Hormuz

In the U.S., crude oil and distillate inventories fell, while gasoline stocks rose last week, market sources said on Tuesday, citing data from the American Petroleum Institute. API/S

Official inventory numbers from the U.S. Energy Information Administration are due at 10:30 a.m. ET (1430 GMT), with analysts polled by Reuters expecting crude stocks fell by about 600,000 barrels in the week ended August 14.

Oil prices ticked higher in early trade on Wednesday, climbing for a fourth straight day on supply uncertainty as investors weighed conflicting messages from Tehran and Washington on whether the Strait of Hormuz is open to ships.

Brent crude futures LCOc1 climbed 26 cents, or 0.29%, to $91.28 by 0004 GMT, while U.S. West Texas Intermediate crude futures CLc1 were up 37 cents to $85.31 a barrel.

Both contracts closed on Tuesday at their highest since July 24 as hopes of peace between the U.S. and Iran faded.

U.S. President Donald Trump said on Tuesday no talks were taking place with Iran and insisted the Strait of Hormuz was open, contradicting Iran's assertion that the critical waterway remained shut to shipping.

A temporary ceasefire agreement expired on Monday and a senior Iranian official told Reuters that his country was moving to a "fully offensive" military posture due to the diplomatic stalemate, though there were no reports of fresh strikes by either side on Tuesday.

To avoid the Strait of Hormuz, Iraq's cabinet approved mechanisms for exporting Iraqi crude through specialized international and local companies and via multiple export outlets, the government said on Tuesday.