This story appears in the Jan. 25 print edition of Transport Topics. MELROSE PARK, Ill. — Navistar Inc. said it will introduce a new version of its top over-the-road tractor this year called the ...

International Truck unveiled a new fuel efficiency package for its ProStar model, called ProStar ES. Short for efficiency specification, the ES package combines enhanced aerodynamics with improved ...

Navistar Inc. has announced a new fuel-efficiency package for its International ProStar model, marking the latest enhancement to the company’s lineup. The ProStar ES, which stands for efficiency ...

Navistar Inc., at a press event in Louisville, Ky., on Wednesday, March 24, introduced the new International ProStar+, which has improved aerodynamics and a nearly 1,300-pound weight reduction from ...

Truck and engine maker Navistar is rolling out a new fuel efficiency package for its International ProStar highway tractor, dubbed the ProStar ES – a designation that stands for “efficiency ...

Navistar Inc., March 24 introduced the new International ProStar+, which has improved aerodynamics and a nearly 1,300-pound weight reduction from the existing ProStar model. “Along with improving the ...

Navistar unveiled Friday its ProStar ES, a truck the company bills as “the best fuel efficiency package in the industry.” Navistar says its ProStar ES (short for efficiency specification), offers ...

Downspeeding isn't a good approach to fuel savings in high GVW applications, so Navistar is offering Canadians a ProStar ES spec designed for 110,000 GVW. It features Eaton's 16-speed UltraShift and ...

Navistar announced this week it will offer the Tremec 10-speed manual transmission in its International ProStar models equipped with the company’s 13-liter engine. Tremec offers a wide range of high ...

Navistar’s International ProStar series Class 8 trucks have been available with the Cummins ISX15 diesel engine and SCR emissions control package since late 2012. Navistar’s International Truck ...

Navistar is adding a new transmission/engine combination for its International ProStar Class 8 highway tractor model: Allison Transmission’s fully automatic TC10 gearbox married to the Cummins ISX15 ...