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Discussion Starter · #1 ·
Has anyone changed the fluid and filter on their 10R80 automatic transmission? I can't imagine it's too hard to drop the pan and change the filter but the refill process to get the correct level seems complicated. The procedure calls for getting the transmission to operating temperature with the car running to check the fluid level after you refill it. Since the little dipstick you check the level with is under the car on the side of the transmission I don't look forward to getting under a running car with hot exhaust pipes to check it. Any alternative ways to check the level with the transmission cold?
 

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This is one of those situations where I would gladly pay Ford to Get ‘er Done!
 
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So, how tough are these new 10R80 tranny's? And the difference did you notice scurfie? I'm getting close to that 50k mark and think I will have the fluid changed then.
This past fall I changed the filter and transmission fluid again by pumping out the fluid and dropping the pan. Afterward, the car shifts just a bit smoother. It's not dramatic but the 2-3 shift is smooth and not harsh. I think the transmission is rock solid, just like the motor, it likes fresh and clean lubrication.
 

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Good to know. Seems like ours shifts weird or sorta hard sometimes. I thought to myself it must be time to change the fluid
I also replaced the differential fluid and used Royal Purple with the Ford additive. That stopped the "clunk" sound that I heard and felt sometimes, but not every time, I pulled from a stop. I have 40,000 miles on my car and the fluid from the differential was black.

I don't follow Ford's maintenance recommendations. I think what they recommend for regular maintenance the mileage is way too high.
 

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Discussion Starter · #8 ·
So, how tough are these new 10R80 tranny's? And difference did you notice scurfie? I'm getting close to that 50k mark and think I will have the fluid changed then.
I dropped the pan and changed the filter and the fluid that was in the pan which was a pretty big job as the plug that you need to refill through is in a tough spot to get to. I didn't notice any difference but at 50K you should at least do what I did. At about 80K I'm going to have all the fluid changed with a flush but not replace the filter.
 

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Yes, I think I'll change that also.
I also replaced the differential fluid and used Royal Purple with the Ford additive. That stopped the "clunk" sound that I heard and felt sometimes, but not every time, I pulled from a stop. I have 40,000 miles on my car and the fluid from the differential was black.

I don't follow Ford's maintenance recommendations. I think what they recommend for regular maintenance the mileage is way too high.
Yes, Ill be changing that also
 
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