I believe the intent and use of the special nut and sealer. My question remains: outside of the torque requirement specified in the Chassis Assembly Manual, there is no reference or mention of the nut spinning in any Ford documentation.
Jim
Why would the special nut be used then? If one were to use a regular flared base nut, say like a smaller version used on the the coil spring covers, even with sealer, the nut would lock the position of the stud on the retainer cable.
I just know that when this nut is used, it allows the cable stud to rotate in the hole, which makes it easier to position the cap/cable properly.
There are service replacements gas caps that came with a locking style nut, which I believe the intent was also the same.