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The Oshkosh powertrain make light work of the Welsh hilly roads. :
Caterpillar C-18 engine
The 1070F uses the Caterpillar C-18 engine, which is an 18.1l six-cylinder in-line turbocharged and after-cooled diesel power unit that can produce 700hp and 2,576Nm torque at 1,300rpm. The vehicle provides the necessary power to move its 118,050kg gross combined weight (72t Challenger II tank) at a speed of 80km/h on tarmac surfaces and 38km/h on a 2.5% gradient.
The transmission used in the 1070F is the Allison HD 4076P, seven-speed automatic with TC-561 torque converter and second gear start. The truck (maximum speed of 85km/h) has a total fuel capacity of 947l with a range of 325 miles.
The Oshkosh also has a central tyre inflation system (CTIS) operated via a series of buttons on the dash (‘CC’ for cross-country, ‘HWY’ for normal on a highway, ‘MSS’ for mud, snow and sand) that can keep a tyre inflated even if a bullet goes through it. The tyres used for the UK 1070F are Michelin 425/95 R20 (16.00 R20) 22 ply tubeless.