Quote:
Originally Posted by bigben
As I understand from the F53 forum, the 6 speed drives better until it comes to going down the hill. Then, at least as others have reported, the engine doesn't help brake at all. I've learned how to drive my five speed in cruise control and with a couple of specific techniques it is very easy to drive. Having been through the Rockies this last summer (via Ten Sleep), I've taken a real liking to the Tow/Haul mode going down hills.
Puts and takes on both sides of the equation but helping me brake the speed on my 14 ton monster rolling down a 6% grade is fairly important to me.
Enjoy your new coach - we love ours.
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There was an excellent detail report, on the Airstream forum by Wayward, of the 6R140 transmission coupled to the 6.2L V8. While it doesn't apply directly to the F-53 with V10, it suggests that the transmission can do a great job downshifting to provide engine braking (at least as programmed for F-Series SuperDuty).
I really like the two manual shifting modes which may not be available on F-53 or E-Series. Reported fuel economy while pulling the Airstream was pretty good too.
http://www.airforums.com/forums/f463...ift-69608.html
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