Moving up in the PACCAR line takes us to the MX-11, which is used in Peterbilt model 567 and 579 trucks. This 10.8-liter engine can put out as much as 430 horsepower and 1,650 pound-feet of torque.

There are two engine brands that power Peterbilt trucks: PACCAR and Cummins. The PACCAR engines include MX-13, MX-11, PX-9, and PX-7, while the Cummins models are limited to X15, ISX12N, L9N, and ...

Peterbilt Motors Co. announced that a California-compliant version of the Paccar MX-13 diesel engine is now available in its Model 579, Model 567 and Model 589 trucks.

Peterbilt Motors Co. announced two new medium-duty box truck models — the 535 and 536 — aimed at the lease and rental segment; and two other models — the 537 and 548 — intended for the ...

Founded in 1939 by T.A. Peterman, Peterbilt is American owned by the Pacific Car and Foundry Company, or PACCAR, based in Bellevue, Washington. Peterbilt trucks are manufactured in both Denton ...

Peterbilt advertises the MD 536 as the “perfect truck to showcase the latest B6.7N engine,” the OEM said in a release, with 200 to 240 horsepower and 520 to 560 lb.-ft. of torque available ...

If you have an opinion on the new diesel engines built to meet EPA’s mandated emissions standards, Peterbilt Motors would like to hear from you. The truck maker is conducting an online survey at ...

The newest Cummins-Peterbilt SuperTruck, which uses an aerodynamic Peterbilt Model 579 with a Cummins ISX15 powerplant, achieved 10.7 mpg during testing between Denton, Texas, and Vernon, Texas.