MARSHALL, Mich. — Paccar Inc.’s new 18-speed automated manual transmissions prove their worth long before approaching a 15-degree hill on Eaton Corp.’s snow-covered proving ground in mid-Michigan.
The TX-18 debuting this July in Peterbilt and Kenworth heavy-haul trucks for on- and off-highway uses doesn’t drive like the family SUV, but maneuverability hauling 140,000 pounds is not that far off a family hauler when it comes to steering feel, braking and a lot of smart assist features Paccar...