International Truck fuel efficiency package for Class 8 ProStar; 11% better than 2010 baseline
Green Car Congress
DECEMBER 7, 2014
The ES, short for efficiency specification, offers improved aerodynamics, a drivetrain with advanced downspeeding and what the company says is the most efficient rear axles in the industry. The ProStar ES was developed to have the lowest wind averaged drag coefficient in the industry.
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