Navistar Showcases ProStar Fuel-Economy Spec, Enhances Remote-Diagnostics Platform

SAN DIEGO — Navistar Inc. showcased a ProStar tractor featuring what it described as its most fuel-efficient Class 8 specification and announced several enhancements for its OnCommand Connection remote diagnostics platform at a press conference here.

The sleeper tractor incorporates engine downspeeding and enhanced aerodynamics to offer the company’s highest fuel economy, Jodi Presswood, vice president and general manager of Navistar’s heavy-duty truck product line said at the event, held here Oct. 5 in the exhibit hall at American Trucking Associations’ annual Management Conference & Exhibition.

The ProStar was equipped with the Cummins-Eaton Smart Advantage powertrain, consisting of a Cummins ISX15 engine paired with a 10-speed Eaton Fuller Advantage automated manual transmission.

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It also uses the Dana Spicer AdvanTek 40 axle, which enables higher torques at lower RPMs to enable downspeeding, Presswood said.

The sleeper tractor also featured chassis skirts and fairings to reduce aerodynamic drag.

Navistar said it plans to roll out new features for OnCommand Connection beginning in November.

The company said it will offer a mobile application for the remote diagnostics system and will add geofencing capabilities and direct integrations with its component suppliers, starting with engine maker Cummins Inc.