My 2001 Supercrew 5.4 with 49,000 miles makes a dry engine noise on startup when it's been sitting for a while (overnight, while I'm at work, etc.) The noise goes away after about 5 seconds, but I don't like the sound of it because I've always been told that most of the wear on a motor occurs at startup, after the oil drains to the lowest point. I've used the Ford dealer almost exclusively for oil changes. Used Amsoil for 1 interval, but saw no advantage so I recently went back to the dealer (1 week ago). I think they put 5w20 in the truck. Anybody else have this problem. Or better yet, anybody know how to get rid of it? I searched the archives, but didn't find anything that matched too well.

 

Oops. Rechecked the archives and found lots of info. Most of it refers to pre 2000 engines. Mine is a 2001. Does the poston slap still apply to the newer engines? Could the synthetic change by me 2 changes ago be making it worse? It did it before the syn switch, however.