KIRKLAND, WA - Kenworth customers will receive up to an estimated 1% fuel economy advantage when PACCAR becomes the first company to make a new, full synthetic axle lube standard on its Class 5-8 models in the United States and Canada starting this summer.

Kenworth will introduce Cognis EMGARD FE 75W-90 into production at plants in Chillicothe, Ohio, Renton, Wash., and Ste. Therese, Que. Major advantages over conventional gear lubricants include better operating performance, increased gear life, extended drain and all-season lubrication, and reduced maintenance and downtime.

Cognis EMGARD SAE 50 full synthetic transmission fluid is also standard fill on Kenworth Class 5-8 models and contributes to fuel economy and optimum component protection. Both the synthetic axle lube and synthetic transmission fluid are available at Kenworth dealers.

Cognis is a worldwide supplier of specialty chemicals. The company's North American headquarters is in Cincinnati, Ohio. More information is available at www.cognis.com.

Kenworth Truck Company is the manufacturer of heavy and medium duty trucks. 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 home page is www.kenworth.com. Kenworth. A PACCAR Company.