After jumping over 20 percent in the second quarter of the year, oil prices hit three-month lows on Monday, threatening to put the brakes on a fragile recovery.
Resurgent concerns over supply-demand mismatches have hurt sentiment, analysts said.
"It's not just in the U.S. In Asia, if you look at Chinese gasoline demand growth, it was 10 percent last year. This year, it's tracking the mid-single digits," said Scott Darling, JP Morgan's Asia Pacific oil and gas head of research.
On Tuesday in Asia, crude oil futures were mostly flat after the rout overnight.