Oil resumed its slide on Wednesday as Washington kept up pressure for a big OPEC output rise to prevent a politically-damaging U.S. gasoline shortage.
International benchmark Brent Blend crude oil futures for May delivery shed 21 cents to $25.51, having slumped $1.35 per barrel on Monday and recovered 52 cents on Tuesday.
U.S. light crudes were 23 cents off at $27.58.