Zebrafive
Super Member
I don't know that anyone has mentioned it, but one of the great benefits of 4wd is downhill 4-wheel braking. With 2wd, you only have the rears. Of course with a loader, the effect is multiplied, but having 4wd to aid braking going down steep hills is very useful on a non-FEL tractor too.
My JD 6415 engages 4wd when the brakes are applied.