With a full year in the marketplace and more than 5,200 units built, Navistar’s Maxx Force 11- and 13-liter big bore heavy-duty diesel engines are providing customers with a new level of performance, drivability and fuel efficiency.
“Since delivering the first units in 2008, we’ve consistently received positive feedback from our customers on the outstanding performance and fuel economy characteristics of our MaxxForce big bore engines,” said Jack Allen, president of Navistar’s North American Truck group. “As we prepare for the launch of our 2010 EPA-compliant Advanced EGR engines early next year, we’re delivering a customer-friendly, no-hassle solution that places emissions compliance on us, the manufacturer, not the customer.”
MaxxForce big bore diesel engines were designed and engineered specifically for the International WorkStar, International TranStar and Internationl ProStar Class 8 commercial trucks.
Using the latest in innovative technologies - from a compacted graphite iron (CGI) block to a high-pressure, common-rail fuel system and advanced electronic controls - the MaxxForce 11 and MaxxForce 13 deliver outstanding fuel economy, excellent power and torque, and quiet operation with low noise, vibration and harshness, according to Allen.
One customer impressed with its new MaxxForce big bore engines is the Brockway-Smith Company (BROSCO), a wholesale millwork distributor based out of Andover, Mass.
“What really drove us toward the MaxxForce engines were the upcoming emissions requirements,” said Al Dirth, BROSCO’s vice president of operations. “It seemed like a no-brainer. I didn’t want to get into a system that would require us to put in an extra urea tank, which would need an extra heating and cooling system, etc. To me, if I could make my life simpler, why not do it?”
Beyond the customer-friendly simplicity of the MaxxForce big bore, Tennant Truck Lines, Inc. (TTL) of Orion, Ill. is realizing tremendous improvements in fuel economy. With more than 75 trucks in its fleet, TTL is an open deck carrier that transports heavy farming machinery.



