Fuel

Oil jumped by more than $4 Friday, the biggest gain in a month, following a report that more U.S. jobs were created in July than economists had expected, Bloomberg reported.

The California Air Resource Board will be conducting increased heavy duty diesel truck inspections throughout August at scales, truck stops and fleet facilities.

Federal officials have approved a permit for the southern leg of the Keystone XL pipeline that will run from an oil refinery in Cushing, Okla., to the Texas coast, the Associated Press reported.

Heavy-duty truck manufacturers have improved the fuel efficiency of their tractors through a combination of new technologies, powertrain improvements, enhanced aerodynamics and efforts to reduce rolling resistance.

KIRKLAND, Wash. — Kenworth Truck Co. continued its push into the natural gas market, providing journalists and customers an opportunity earlier this month to test multiple models with engines that run on the fuel that’s garnering significant attention from the trucking industry.

New engine technologies and improved aerodynamics have yielded significant fuel efficiency gains for carriers running post-2010 heavy-duty trucks, but some fleet executives said they are encountering some new maintenance issues.

U.S. retail diesel and gasoline prices rose for the third straight week, taking back more of the substantial cost drops that dominated the second quarter of the year, the Department of Energy reported July 23.

Michigan Gov. Rick Snyder declared an energy emergency in Michigan this week, due to shortages of diesel and gasoline in the state’s Upper Peninsula caused by a pipeline shutdown in Wisconsin.