Caterpillar has its D6T bulldozer by fitting a new transmission and new Auto Shift system. This upgraded driveline is said to boost fuel efficiency by 20% for the D6T, compared with the previous model. However fuel savings can be boosted as high as 30% in light-load and finish-grading applications. The fully automatic system maintains production while optimising fuel efficiency. Additionally, the new version of the D6T now is equipped with the firm’s GRADE with Slope Assist as standard equipment.