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 ...

Navistar's ProStar ES 110, unvieled at Expocam in Montreal, April 17. Photo by Jim Park MONTREAL, Que. -- Designed expressly for the Canadian market where higher gross weights are allowed, Navistar ...

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 ...