New 12.8-liter MP8 dieselin highway type MaxiCruise tuning makes up to 485 horsepower. It's strong and clean-burning. Maxidyne and Econodyne versions have somewhat different operating characteristics.

All the Latest Game Footage and Images from American Truck Simulator: Mack Pinnacle The Mack Pinnacle combines power and reliability with modern technology and a classic design. A legendary workhorse, ...

PITT OHIO says it is testing a natural gas-powered Mack Pinnacle Axle Back model in its fleet – the first natural gas truck in the company’s operations. Based in Pittsburgh, Pa., PITT OHIO is a ...