Benchmark U.S. crude oil for September delivery fell 81 cents to $68.28 a barrel Friday. Brent crude oil for October delivery fell 59 cents to $70.62 a barrel.

       Wholesale gasoline for September delivery fell 3 cents to $2.26 a gallon. September heating oil fell 3 cents to $2.08 a gallon. September natural gas was unchanged at $4.14 per 1,000 cubic feet.

       Gold for December delivery fell $$45.80 to $1,763.10 an ounce. Silver for September delivery fell 96 cents to $24.33 an ounce and September copper was unchanged at $4.35 a pound.

       The dollar rose to 110.23 Japanese yen from 109.76 yen. The euro fell to $1.1758 from $1.1836.