Western Star 6900

Gross Vehicle Weight: Up to 138,000 pounds (up to 62.5 t)
Vehicle use: Oilfield, mining, logging, towing/recovery
Types: XD, TS
Engines: 6-cylinder
Outputs: 425 – 605 hp/EPA 10/GHG 14/GHG 17
Chassis: 6x4, 6x6, 8x4, 8x6, 8x8
Class: 8


The relevant press material you find > here

Daimler Trucks – Product Range Western Star