goducks10 wrote:
BTDT with a 2010 F150. JMO so take it how you want, but that 6sp tranny is the worst tranny for towing I've ever towed with. The reason it's downshifting alot is because you can't lock out either OD's or select what max gear you want. The tranny will hunt ans shift all day long. I had the same issues towing 7300lbs going over simple interstate overpasses. It would shift 3-4 times during the whole process. Really irritating.
the plus side to the tranny is they greatly improved the cooling from 08. I used a Scangage to monitor tranny temps and the tranny stayed in normal temps all the time.
Tow haul mode won't change often the tranny shifts. It will just make the shifts firmer. BTDT
I have a 2011 F-150 with the 6 speed tranny. It is easy to lock out the top gears. All I do is while in top gear I push the up button on the shifter that then lights up the gears lights on the indicator. Once lit up I then push the down button. As I do the top gear lights will go out. Once the lights are out the gears are locked out and the tranny will not go into those gears. Easy.
I like the tranny so far. My only complaint is that it does not have a "hill hold" feature. While backing my TT up hill into the storage shed if take my foot off of the gas the truck will start to roll down the hill forward right away. You have to get your foot in the brakes quick.