SINGAPORE - Oil was lower in Asian trade on Tuesday as investors paused ahead of a US central bank meeting, hoping for clear signals on stimulus measures. New York's main contract, West Texas Intermediate for delivery in Sept, was down 27 cents at $104.28 a barrel in mid-morning trade, and Brent North Sea crude for Sept eased 13 cents to $107.32. Analysts said investors were taking a breather from a recent rally while waiting for a meeting Tuesday of the US central bank's policy-setting FOMC.

Focus will be on a clear timeline for the Fed to reel in its $85 billion-a-month stimulus programme, with some analysts saying it could come as early as September.

"At the July 30-31 FOMC meeting, we expect an ambiguous signal from the Fed about the exact timing of tapering, causing markets to rethink whether September really is a done deal," analysts at Bank of America Merrill Lynch said in a note.

"The majority of voters (in the committee) are likely still looking to move before year-end," they said.

"However, given the weak GDP and inflation data, there probably is not a strong consensus about exactly when to pull the trigger."