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The U.S. average retail price of diesel fell 3.1 cents to $2.348, the Department of Energy said, amid high fuel inventories plus falling crude oil prices that are approaching a bear market.

Daimler subsidiary Mercedes-Benz outlined plans to start selling an electric heavy-duty truck in about five years, a week after Tesla Motors Inc.’s initial sketch on battery-powered commercial vehicles failed to impress investors.

The U.S. average diesel retail price declined 2.3 cents to $2.379, the Department of Energy reported.

The global oil market is "severely oversupplied" with gasoline — with stocks at a five-year high — serving as a blow to crude prices from next month, reckon Morgan Stanley analysts led by Adam Longson.

Growing corridors of natural-gas fueling stations, together with a scattering of other ways to power heavy-duty trucks, make up an expanding infrastructure providing alternatives to traditional diesel.

WASHINGTON — Shell Rotella has unveiled its new lineup of lubricating oils, products designed to maintain the hotter-burning diesel engines coming in January 2017 and beyond.

Oil dropped to the lowest close in more than two months as the United States heads to the end of the summer-driving season with ample inventories.

WASHINGTON — Manufacturer Shell Rotella rolled out its new lineup of lubricating oils designed to maintain the hotter-burning diesel engines coming in January 2017 and beyond.

Fleet-tracking companies Teletrac Inc. and Navman Wireless announced a new telematics platform that combines their two product lines into one offering for customers.