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Waste Management Inc. announced Oklahoma City as the location of its 100th compressed natural gas fueling station.

While gasoline prices are hovering around $2 per gallon in Oklahoma, that’s not the direct cost of the fuel. State and federal taxes tally up to 35.4 cents of total gasoline cost per gallon.

Oil slipped, heading for the biggest weekly loss in a month, as the outlook for demand dimmed in an already shaky market.

Pennsylvania motorists will have an opportunity to participate in a study exploring the potential impact of a road usage tax on the East Coast.

When it comes to liquefied natural gas in particular, refiners have turned their attention to a broader use: plastic goods.

U.S. producers are seen pumping away, even with the price of West Texas Intermediate crude lingering below $50 a barrel, according to the latest government estimates.

The U.S. average retail price of diesel jumped 5 cents to $2.581 in the sixth consecutive increase for trucking's main fuel.

Clean Energy Fuels Corp., a provider of natural gas fuel for transportation in North America, added three large fleets serving as United States Postal Service carriers.

The state’s standard for the biodiesel blend will double to 20% at gas pumps next May, a decision that displeased trucking industry advocates.