2018 Detroit Auto Show: Achates, Aramco Launch 37-MPG Pickup Engine John O'Dell January 15, 2018 Auto Shows, Detroit Auto Show Achates Power and Aramco Services have outfitted a Ford F150 with Achates' new compression-ignition, gasoline powered, opposed-piston engine the company says will deliver 37 mpg fuel economy without hurting truck's working capabilities. (Photo: Achates) FacebookTwitterLinkedInE-mailReddit The developers of a gasoline-engine pickup on display at the North American International Auto Show in Detroit hope to enter the national conversation on fuel efficiency and emissions reductions.Achates Power, a California-based engine developer, and Aramco Services, the transportation-focused U.S. arm of Saudi Arabian Oil...