Oil slides under $92 per barrel NEW YORK, May 18 (UPI) -- Crude oil prices Friday slid under $92 a barrel on the New York Mercantile Exchange. West Texas Intermediate crude oil for June delivery gave up 83 cents to $91.43 per barrel. Natural gas for June delivery shed 2.3 cents to hit $2.719 per million British thermal units after a four-week inventory buildup. Home heating oil was up 1.35 cents to $2.8516 per gallon. Gasoline lost .31 cents to reach $2.8435 per gallon.