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myredracer's avatar
myredracer
Explorer II
Aug 05, 2014

Pardon my thickness but what is locking out gears

in a transmission all about? What is involved to do it? I don't even know if our '09 F250 can do it. We have a V-10 with 4.1 final drive, rated to tow 12,500 lbs and tow a 29' TT weighing about 7K lbs. We just had a run up about a 10% grade to 4,000 ft. I had tow haul on and it was fine and had it at about a steady 50 - 55 mph. Do I ever need to think about locking out a gear? Or have I got this all wrong and it's something you would do for downhill runs to improve engine braking?

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