[chromehorse]

My '00 high mile Zetec wagon is getting a little shifty...a little too much!! While driving in third gear, it seems to slip. I don't think that it is dropping down a gear or anything,it just seems to slip, sometimes relatively hard. Seems to be worse when cold, but it has done it hot as well. Actually come to think of it, it isn't necessarily third gear only. I can manually shift it and it works fine. Originally i thought maybe the lockup torque convertor was acting up, but the speeds seem to slow for it to come into play. The other day i put in some Lucas Auto Tranny conditioner out of sheer desperation...it worked great!! For two days!! So anyway, has anyone come across an issue like this before? Any ideas?

Thanks in advance