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So here we are again, trapped in still another fuel-price spiral, as we helplessly watch outside events and parties set the cost and supply of the precious liquids that make our industry possible.

Biodiesel producers said they do not agree with calls for the federal government to waive ethanol and other renewable fuel production mandates because of the drought reducing the corn crop in the Midwest.

The U.S. retail diesel average price rose 6.1 cents to $4.026 a gallon last week, the first time it has risen above $4 since May, the Department of Energy reported last week.

Oil held over $96 a barrel in early trading Friday as forecasters kept an eye on Tropical Storm Isaac, which is likely to move into the Gulf of Mexico next week as a low-level hurricane, Bloomberg reported.

Oil held at a three-month high over $96 a barrel Monday, as European leaders were set to meet to discuss ways to combat their ongoing debt crisis, Bloomberg reported.

BOCA RATON, Fla. — Executives with both for-hire and private fleets said they increasingly are turning to cost-saving technologies and natural gas to reduce expenses in a slow-growth economy.

The price of diesel exhaust fluid at the pump at U.S. truck stops dropped significantly in July, following a similar decline for urea, the main ingredient in DEF.

U.S. retail diesel prices spiked 11.5 cents to $3.965 a gallon last week, the Department of Energy reported, the largest increase in 17 months. Experts attributed the gain to higher crude prices, falling inventories and a refinery fire.