Here we go. Shifts hard from 1 to 3. Lags from 6-7 and 9-10. What will the repair be. Once it is warmed up no shift problems at all. It's under ford extended warranty. Also not low on fluid now. It wasn't showing on the dipstick off or running so I added about a quart to get it to the 6 level. There is 64k on the vehicle. Thanks for any input.

After driving one in my work truck the first thing I would do if I owned one personally would be get it and the engine tuned. I hate that transmission from factory.

Get it fixed under warranty and sell it before warranty expires.

Apparently you're supposed to do a partial drain and fill every other oil change which is for the birds. Of course Ford makes no mention of this suggestion.

Take it in and document. You may have CDF issues.

Had my '21 expedition transmisison replaced at roughly 50k. Take it in and get a paper trail started.

Getting my 2022 (95,000 mile) 10R80 MHT repaired with updated CDF drum and valve body right now. Get yours checked out because it is $7,000-$9,000 outside of warranty.

Ford began using transmissions with the revised CDF in August 2022 for future reference.

Thanks for the replies. Taking it in today or tomorrow.

Have 113,000 on mine and pull boats and trailers a lot. Have had no issues at all.

Gunny456 said:

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Have 113,000 on mine and pull boats and trailers a lot. Have had no issues at all.

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Ford is stalling on my premium warranty through them right now. If they deny I'm going to really be pissed.

Let me see how it goes first with the dealer

Finally approved!! Ford is replacing the transmission. Thank for the support 1ags.

CactusThomas said:

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Apparently you're supposed to do a partial drain and fill every other oil change which is for the birds

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According to who?

Told me the atf was burnt.

southernboy1 said:

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Told me the atf was burnt.

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I was referring to the other person that posted that the ATF should be changed every other oil change.


With the advent of these low viscosity transmission fluids, they tend to discolor very easily. The one I drained out of our Ford expedition was totally black, but when I sent it into the lab for diagnosis and analysis, they said the fluid was actually OK. Right at 50,000 miles. I plan on servicing them more frequently than not. But not at every other oil change. More like a 30 to 45,000 mile interval.