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Put 1/2 a quart of ATF in the engine about 100 or so miles before you change the oil. Use motorcraft oil filters and after a few times doing that should clean out the sludge just keep an eye on it and the oil pressure. You can do a compression test and check the vacuum pressure to determine if it is rings or valve seals causing the loss of oil if your not dripping somewhere. Does it smoke when you start it or when it is running. You dont want to run it extended periods with additives in the crankcase, ATF is cheap and works just as good as any oil treatment.
My suggestion....get rid of that junk Fram filter and put a motorcraft back on it. Fram's have a tendency of draining back. Cheap junk inside of them.