KIRKLAND, Wash., September 9, 2008 – Kenworth Truck Company, the industry leader in fuel efficiency, has produced the “Kenworth White Paper on Fuel Economy” to help meet the challenges of today’s high diesel prices and operating costs.

The comprehensive Kenworth white paper features detailed sections on aerodynamics, component spec’ing, route and idle management, driver behavior, proper maintenance, and advanced technology to assist truck operators in their efforts to increase fuel economy and manage operating costs.

“Fuel efficiency, and finding ways to increase it, is foremost on the minds of fleets and owner-operators today,” said Gary Moore, Kenworth assistant general manager for marketing and sales. “The Kenworth White Paper on Fuel Economy provides very useful information that can help pay dividends in the drive to enhance fuel efficiency and reduce operating costs.

“The purchase of an aerodynamic truck, such as the Kenworth T660 or T2000, is one of the best ways to help increase fuel economy,” said Moore. “In addition, the factory installed Kenworth Clean Power(R) no-idle system, which is available for the T660, T800 and W900 equipped with the 72-inch AeroCab(R) sleeper, may enhance fuel economy by as much as 8 percent for customers with high-idling times.”

As a leader in aerodynamics and fuel efficiency, Kenworth pursues even greater fuel efficiency through aerodynamic enhancements achieved through a combination of Kenworth Research and Development Center design efforts, computational fluid dynamics, and wind tunnel, test track and highway testing.

The “Kenworth White Paper on Fuel Economy” is available as a .pdf file for electronic download and printing on Kenworth’s website (www.kenworth.com). Copies are also available from Kenworth dealers.

Kenworth Truck Company is the manufacturer of The World’s Best(R) heavy and medium duty trucks. Kenworth is an industry leader in providing fuel-saving technology solutions that help increase fuel efficiency and reduce emissions. The company’s dedication to the green fleet includes aerodynamic trucks, medium duty diesel-electric hybrids, liquefied natural gas trucks, and the Kenworth Clean Power(R) no-idle system. In addition, Kenworth is the recipient of the 2008 J.D. Power and Associates awards for Highest in Customer Satisfaction for Over the Road and Vocational Segment Class 8 trucks. Kenworth’s Internet home page is at www.kenworth.com. Kenworth. A PACCAR Company.