Service intervals...will they increase
New automatic for class 8 , heavy duty trucks called the Eaton Endurant. I was reading that he oil drain intervals have been stretched out to 750,000 miles for this transmission. I'm impressed. I...
Forum Discussion
rjstractor wrote:
Well, technically you are right, but the 6R140 is not used in "real" heavy duty trucks with 1800 ft./lbs of torque and combined weights of 100,000 pounds or more. Class 8 is 33000 lbs and up, but there is a huge spread of specs and capability within that class, and the Ford is at the lower end of that class 8 spread. Having said that, the fact that the same trans as used in HD Ford pickups will stand up to usage in a 37K GVWR truck is very impressive.
It is still a real class 8 heavy duty, it is just a vocational heavy duty meant for work and hauling, not tractor heavy duty meant for towing. The 6R140 would probably have to be much larger like the Allison 4000 or 4500 to handle that kind of duty cycle.
