Since they are not going to do anything about it (and you shouldn't let them until the solution is well known), just state the facts, get them to write it up, get a copy of the work order, and let them verify the sound. They'll probably say it's normal, etc., which is fine. Get it in writing.
I also told them not to do any work on the car without contacting me first for authorization.
Sounds like from Dennis's post that Ford is stating that this condition is normal (as Piston Slap), and by implication that no abnormal wear will result. Until there is evidence of abnormal wear, this problem will have to be classified as annoying. However, if it can be shown that the sound substantially reduces the use, value, or safety of the car, you could argue for a buyback (it's up to an arbitrator; they won't care if "they all do it", they'll decide if the car has been devalued, etc., as most cars do NOT make this noise).
If you really like the car and feel that when it comes time to sell it the noise won't devalue the car, then you have no worries.
<font size=-1>[ This Message was edited by: DrivingSimulators on 2002-01-29 21:29 ]</font>