Fuel Consumption improved probably 4 to 5 mpg more, big difference overtaking it's auto so changes up into 6th far quicker. The works foreman at the garage I bought it from had a short run it and couldn't believe the difference.
What about all the lorries tipped over at roundabouts in ditches, hitting houses far more than tractors and more likely to do more damage because of the speed. I've driven both Lorries and Tractors.