Ok... I've heard guys say to change the oil after the first 1,000 miles, then every 3,000 from there on. Others say change it after the first 500miles, then after 1,000, then every 3,000 from then on. The Ford owner's manual does not talk about any of this, though other car manufacturers DO say to change the oil after the first 1,000 miles. The fact that Ford recommends "synthetic blend" oil in a new engine, and also supposedly fills the crankcases of brand new engines with this oil, it would seem that they do not expect much break-in wear. Or...? I still think it is odd that Ford does not talk much about "break-in"... gee, ANY engine must "break-in". I just checked my oil level at 600 miles, and wiped the oil from the dipstick onto a white towel. The oil appears "clean". On some new engines during break-in, sometimes the oil will have a bit of "dark-gray" residue in it (metal debris from break in), but not this engine, at least not yet. I was about to change the oil, but now I am thinking perhaps I can go safely to 1,000 or maybe a little more before the first change. Perhaps these engines truly do not "break in" much due to critical tolerance settings and extremely excellent "fit" of parts. ...???