Initial 10 Speed Observations - Ford Powerstroke Diesel Forum
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post #1 of 42 Old 12-14-2019, 06:14 AM Thread Starter
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Initial 10 Speed Observations

I took delivery of my 2020 F250 Limited 3 days ago, and want to provide a few observations about the new transmission (albeit with admittedly very few miles driven thus far). As background, this is my 6th 3/4 ton diesel. My most recent vehicle was a 2017 F250 Platinum, which honestly, I could have driven for a long time. I ordered this new vehicle not because I needed the additional power/torque, not for the minimally altered styling, and not because I wanted a "cushier" rig; I bought this truck solely for the 10 speed.

Observations:

It shifted extra hard when I picked it up with all of 9 miles on it, but that quickly went away as I thought it would; it shifts pretty smoothly now. It skips gears all the time; this depends on throttle pressure, trans temp, etc; I haven't determined the rhyme or reason/pattern. This was to be expected by design. I've been asked a lot when it "locks up"/10th; though I have about 90-100 miles on it (very little), it seems to be in the mid-50s, but again, this varies with throttle pressure-don't hold me to this... So far, the most interesting thing I have noticed is at parking lot speeds. On the 6R-140, you can let off of the gas in 1st or 2nd and it will coast some (kind of like a gas car/trans combo). With the 10R-140 if you are in 1st gear or 2nd and let off of the gas, it has that "gyro" effect, with the engine somewhat lurching with the trans-as if I'm in 4 wheel low. Now, I know these new 1st, 2nd, etc. gears are shorter than the 6 spd's, obviously, but it is quite different. Lastly, I'm one of those anal-retentive sorts who immediately installs filter mags on the oil filter and one on the trans pan. If you know anything about these, they are damn strong. At any rate, I went to put one on the trans pan, but it has kind of a "grate design" on the bottom of the pan, and I think it is plastic. I haven't figured out what this is for, but I guess I won't be able to install my industrial filter mag for ferrous "flour" that might be in the trans over time... That's it, fire away...
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post #2 of 42 Old 12-14-2019, 04:29 PM
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Awesome to read. Thank you for posting your experiences. Please continue as you drive and share the adventures!!



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post #3 of 42 Old 12-15-2019, 07:00 AM
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Interested to see if it uses every gear while towing, or while in tow haul.

Also does the exhaust brake have more of an effect with the 10 speed?

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post #4 of 42 Old 12-15-2019, 11:31 AM Thread Starter
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Quote:
Originally Posted by 7.3lf550 View Post
Interested to see if it uses every gear while towing, or while in tow haul.

Also does the exhaust brake have more of an effect with the 10 speed?
I don't know these yet. It will be after the first of the year before I tow.
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post #5 of 42 Old 12-16-2019, 04:25 AM
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interesting info. Curious how it does with a big trailer on it. I'm sure it will love it, these trucks are designed to pull.

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post #6 of 42 Old 12-16-2019, 09:52 AM
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Post up mpg figures please. I know its new/different driving habits/towing ect.. Throw up some numbers so we can start tracking mpg. Thanks!!!
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post #7 of 42 Old 12-16-2019, 11:05 AM
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I'd be curious if they change much at all. Like I stated in previous posts about this item, the 10 speed doesn't lock out at any higher Mph than our current 6 speed. The only thing that may help is the lower 3.31 but that might even hurt the MPG more because it will make the tranny downshift more to 8th or 9th.

Time will tell with this new setup but my gut is telling me MPG will be the same if not a smidge higher.

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post #8 of 42 Old 12-17-2019, 03:55 PM Thread Starter
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I'm loving the truck; it shifts like butter now. That said, very slow speeds in parking lots-feels vastly more awkward than before with the 6 speed, likely due to the shorter gears.
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post #9 of 42 Old 12-17-2019, 06:53 PM
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I went to check out a 2020 f250 FX4 lariat sport with the 6.7PS and on the sticker it states that it had the 3:55 rear axle. I thought the new 10 speed F250 with the diesel has the 3:31 rear axle now?


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post #10 of 42 Old 12-18-2019, 02:49 AM
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Quote:
Originally Posted by toad0407 View Post
I went to check out a 2020 f250 FX4 lariat sport with the 6.7PS and on the sticker it states that it had the 3:55 rear axle. I thought the new 10 speed F250 with the diesel has the 3:31 rear axle now?


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If the 3.55 gears were a selected option or the tire/wheel choice drove the 3.55 gears is a possibility.



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