PACCAR Launches MX 11 Diesel

PACCAR is expanding its range of diesels in North America with the introduction of the 10.8-liter MX-11, based on a successful European engine.

The MX-11, up to 430 hp and 1550 lb ftThe new engine weighs some 400 lb less than the larger MX-13, and has six ratings from 355 to 430 hp with torque ranging from 1250 to 1550 lb ft.

PACCAR launched the MX-11 in Europe in 2013, installing over 10,000 of them in DAF trucks in the last two years. Field testing has covered 2 million miles.

The engine combines what the maker calls “state-of-the-art innovations and proven technologies” that reduce weight and deliver features needed for a wide variety of over-the-road and vocational applications. It has double overhead camshafts and a common-rail fuel system with injection pressures of 36,000 psi.

It uses compacted graphite iron in its cylinder block and head, and claims a B10 life of 1 million miles for highway applications and 750,000 for vocational use. That means 90% of the engines will still be running at those points without overhaul.

The new engine will be available in Kenworth and Peterbilt trucks and tractors in January.

Rolf Lockwood is editor emeritus of Today's Trucking and a regular contributor to

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