I've just been through this process. I replaced the transmission pan, filter, fluid, gasket, and changed out the transmission cooler. I did this because on a recent run, at 90°--95°F ambient outside temps, over to Santa Cruz, my transmission temp hit 220°.
I bought a Ford pan, slightly deeper than the original, with a drain plug, a Ford filter and gasket, for $78.35, after tax. Part numbers, for those interested: Pan= F81Z-7A194-BA, Filter= FT-114, Gasket= F6TZ-7A191-A.
I bought a True-Cool Max transmission cooler from Bob Riley, for $120+.
Bob Riley's Dieselsite
I got the Ford pan more for the drain plug than the additional capacity. The filter needed changing since I was in there anyway changing the fluid. The new gasket is 'rubber' and reusable.
I haven't actually tested the new cooler yet, but will report results when I do. Might have to wait for another hot day for a true test.
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1992 F-350 Crew Cab ,7.3 IDI, 4x2, E4OD, Dually, white, pretty much stock, in California.
1986 F-250, 6.9 IDI, 4x4, C-6, Banks turbo, awaiting engine transplant, in Maine.
Gandalf is my truck. Gandalf is named after Gandalf in "The Lord of the Rings". He is the Wizard with mystical powers.
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