Paccar Launches MX-11 Engine

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There’s a new engine in Paccar’s MX lineup. New to North America, but with several years of experience under the big DAF cabs in Europe, the 11-liter MX-11 is the engine Kenworth and Peterbilt vocational and P&D customers have been waiting for.

Equipment Editor Jim Park got a sneak preview of the MX-11 while at the Eaton Proving Grounds in Marshall Michigan, the one with the dirt track with grades of 20% and worse. Check out our Focus On video report to see how a Kenworth T880 loaded to 50,000 lbs. GVW and outfitted with a Paccar MX-11 handled those hills.


The MX-11 is not just a scaled down version of the MX-13, it a completely new platform. Although, Paccar says a few of the MX-11’s parts are interchangeable with the larger MX-13. Basically, it’s an inline six-cylinder diesel with a displacement of 10.8 liters. It will be available in six power ratings from 355 to 430 horsepower and 1,250 to 1,550 pound feet of torque.

The MX-11 engine is designed to be a high-performance alternative to larger engines that will still meet the demands of the weight sensitive pickup and delivery and linehaul fleets as well as vocational customers.

Paccar says the MX-11 is about 400 pounds lighter than the MX-13, while still boasting a B10 life of 1 million miles.

Maintenance intervals will be similar to the MX-13, so fleets won’t have to juggle scheduling to accommodate this engine. Routine oil and filter changes come at 30,000 miles (40,000 km) for severe service applications and up to 60,000 miles (96,000 km) for linehaul trucks with minimal idling.

It comes with a base warranty of two year or 250,000 miles (400,000 km).


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Jim Park was a CDL driver and owner-operator from 1978 until 1998, when he began his second career as a trucking journalist. During that career transition, he hosted an overnight radio show on a Hamilton, Ontario radio station and later went on to anchor the trucking news in SiriusXM's Road Dog Trucking channel. Jim is a regular contributor to Today's Trucking and, and produces Focus On and On the Spot test drive videos.

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