Did you change the oil in the first one? The 2.7 is filled with 7 qts from the factory, but the service capacity is only 6. I split the difference and put 6.5 in. Maybe the fill volume is causing it.
I compared several videos of bad 2.7 and 3.5 phasers to the video I took, and the noise I’m hearing is clearly not as loud. There’s a noticeable rattle from 2-3 seconds after ignition, but it might just be the oil pressure building up to the valve train.
I spoke to my service manager, and he...
I'm going to get a video later when I cold start it. It's not too loud right now, but it also seems too distinct not to be the start of it. I'll see what my service manager thinks. I want a new motor if I'm already getting it at 750 miles.
FordTekMakuloco recommends 5k miles with off-the-shelf full synth, so that’s what I’ve been running in all my EcoBoost motors. I do think I’ll send my first few changes off to blackstone to see how it’s holding up.