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Old Nov 4, 2025 | 05:49 PM
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Default Preventive Maintenance

My transmission was just rebuilt (under warranty) so I figured it would be a great time to change out all the other drivetrain fluids. Did engine oil & filter, front & read differential, and transfer case. Used Motorcraft engine oil, Amsoil for the rest. I also changed out my OE H6 to an AMG H8.

2021 F150 XLT 5.0 46581 miles
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Old Nov 4, 2025 | 06:31 PM
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Originally Posted by OldBones
My transmission was just rebuilt (under warranty) so I figured it would be a great time to change out all the other drivetrain fluids. Did engine oil & filter, front & read differential, and transfer case. Used Motorcraft engine oil, Amsoil for the rest. I also changed out my OE H6 to an AMG H8.

2021 F150 XLT 5.0 46581 miles
curious what trans symptoms you experienced?

was it determined to be bad cdf drum?

and did you have trouble (or partial financial responsibility) in getting it diag’d or replaced?
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Old Nov 4, 2025 | 10:26 PM
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Originally Posted by laterongc
curious what trans symptoms you experienced?

was it determined to be bad cdf drum?

and did you have trouble (or partial financial responsibility) in getting it diag’d or replaced?
New transmission - Ford F150 Forum - Community of Ford Truck Fans

This was the post about my transmission
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