Extended Day Cab available for Kenworth C500 vocational

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To help new truck buyers maximize fuel efficiency, Navistar International will offer Maxxpower auxiliary power units and five Maxximum MPG spec packages as options, the Warrenville, Ill.-based company announced Wednesday, May 7.

Available this fall, the diesel-powered Maxxpower APU will have an estimated base cost of $8,500, though the California-compliant version will cost $300 to $400 more because of an add-on diesel particulate filter. The APU is a “comprehensive solution,” says Steve Gilligan, truck group assistant general manager.

The Maxximum MPG spec packages — tailored to Maxxforce, Caterpillar and Cummins engine configurations — are designed to maximize fuel efficiency in five areas: gearing, transmission, low-rolling-resistance tires, synthetic lubricants and rear-axle gear ratios. Any new truck purchase that includes one of the packages will be discounted $1,000.

Navistar International’s goal is to provide the most fuel-efficient options possible, says Tom Baughman, truck group vice president and general manager.