First UOA, impressed with the results and how fast it took to get back! May try 0W-40 to combat the higher iron wear perhaps? Not sure if that will help or if I'm overthinking it.
3.4 is a great motor. Just got a UOA with Mobil done on my 2.7 and iron was a touch elevated as well after a 10k oci. Wonder if valvoline would do any better...I may switch her up