Caterpillar Diesel Sixty TractorsCaterpillar’s Diesel Sixty: A landmark machineContrafed PUblishingMarch 9, 2015February 24, 2022 by Contrafed PUblishingMarch 9, 2015February 24, 2022 The Diesel Sixty marked a significant milestone in the development history of the track type tractor in that it was the first such diesel engined...