West Texas Intermediate crude fluctuated as a low-pressure system in the Gulf of Mexico dissipated, removing a risk to oil and gas production in the area, and turmoil in Egypt deepened.

WTI crude for September delivery, which expires tomorrow, fell 5 cents to $107.41 a barrel at 10:06 a.m. on the New York Mercantile Exchange. It settled at $107.46 on Aug. 16, the highest close since Aug. 1. The October contract slipped 18 cents to $107.11. The volume of all futures traded was about 9.7 percent below the 100-day average.

Brent oil for October settlement increased 35 cents, or 0.3 percent, to $110.75 a barrel on the London-based ICE Futures Europe exchange. Trading of futures was 17 percent below the 100-day average. The European benchmark traded at a $3.64 premium to WTI.