Ultimate Test Drives… 2013 Mack Pinnacle Test Drive Pt. 2 In part two, Jim turns his attention to Mack’s new, low-speed Super Econodyne drivetrain package, which Mack claims can improve the tractor’s fuel efficiency by as much as 3.5 percent. With the key component being integration, Mack brought together the MP8-445SE engine, the Mack mDRIVE automated manual transmission and Mack C125 drive axles, along with […]
