"Built like a Mack truck" might refer to a formidable person, but the tag is what Mack Trucks hangs its reputation on. The recognizable bulldog logo, likewise, reflects the strength and durability that the company's heavy-duty trucks are known for. Mack Trucks is one of North America's largest makers of trucks used in construction, heavy hauling, highway, and refuse work. It also makes powertrains, which comprise an integrated system of engine, transmission, and axles. The company leases, sells, and repairs its trucks in more than 45 countries through a network of approximately 670 sales, parts, and service centers worldwide. Founded in 1900 as Mack Brothers Company, Mack Trucks is a subsidiary of AB Volvo. he Power To Haul It All With Cummins Grunt Get behind the wheel of a Metro-Liner, Super-Liner or Titan and you'll find Cummins power providing plenty of motivation up front. Mack and Cummins have worked closely to develop premium Exhaust Gas Recirculation (EGR) power packages for the new breed - and the ISC, ISL, ISX and Signature 600 engines really complement the New Breed range. The Mack MP8 and Cummins engines use the same emissions technology with a Variable Geometry Turbo (VGT) and a self contained, cooled EGR system providing reliability without sacrificing fuel efficiency. And if you were worried about performance - don't be. Exhaustive analysis, testing and real world operation over billions of kilometres have resulted in stronger power and torque curves, with improved throttle response and greater engine braking. These engines keep Mack ahead of the pack in the high horsepower market. They're reliable, they're strong and they're ready to handle future emissions levels without fuss. Mack and Cummins diesel power - the industry's best technology for the future. Cummins Turbo Technologies' VGT features a patented sliding nozzle design. This is both simple and reliable in that there is only one moving part in the hot exhaust flow. Electronic actuation also ensures fast response. Another feature of the VGT is that there is no need for wastegate adjustment because the turbo doesn't have a wastegat