• Ford last week began to turn out a gasoline-powered, 6.8-liter, V-10 engine for its F-650 medium-duty truck, bringing that alternative to to a market that has lacked the option since General Motors pulled its gas-burner in 2009.
• Some contractors say that if diesel is not critical to their work, the lower price of a gasoline-fueled truck may outweigh better mileage with a diesel that burns significantly more expensive fuel.
• Going with gas eliminates maintenance concerns about new emission-control systems needed to meet environmental standards for diesels, and Ford estimates the truck costs $8,300 less.

From the article:

Many private contractors and public fleet owners have been switching their truck fleets to gasoline lately due to the high upfront cost of diesel engines, reliability concerns and the ongoing hassle of maintaining the added emissions equipment. ...