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Diesel declined for the third consecutive week, slipping 1.4 cents to $3.934 a gallon, the Department of Energy reported May 19.

The average U.S. price for regular gasoline fell 3.5 cents in the past two weeks to $3.69 a gallon, the first decline in three months, according to the latest Lundberg Survey of filling stations.

A survey by the National Biodiesel Board found that nearly 80% of biodiesel producers have scaled back production this year, and more than half have idled production, due in part to what it called a “weak” renewable fuel standard proposal in Washington.

Diesel and gasoline each slipped 1.6 cents, their second straight drops, with diesel declining to $3.948 a gallon, the Department of Energy reported May 12.

Penske Truck Rental said it has 85 compressed-natural gas Freightliner Cascadia semi-tractors available for commercial rental use in select markets.

Clean Energy Fuels Corp. reported a first-quarter loss, but its revenue and natural-gas deliveries increased.

Diesel declined 1.1 cents to $3.964 a gallon, its first drop after two weeks of increases, the Department of Energy reported May 5.

The trade deficit narrowed in March by 3.6% to $40.4 billion from the prior month’s $41.9 billion, the Commerce Department reported.