Fluid overheating, fluid will blow out the front pump seal, the vent, rear output shaft seal and even up the fill tube. Most likely cause is a plugged cooler or a cooler line has been kinked or crushed flat, if the lines look good then I would bypass the cooler in the radiator entirely and install a good auxiliary tranny cooler. I would service the trans and add some LubeGuard for Ford transmissions after doing the above mentioned work. HTH
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