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Just my opinion for what it's worth.

I would suck out transmission fluid until it is exactly at the full mark when you are at operating temps.

As you know, F**d vehicles have traditionally been senistive to old transmission fluid.

I would try to make sure that you adhere to the maintenence schedule on your tranny. I learned my lesson on an F150. Was having crazy tranny problems that were solved by a total tranny oil change.

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