This is the 2nd UOA for my 2014 GMC Sierra 1500 with the new 5.3 Ecotec3 V8. OLM was at 20%. Mostly highway driven (around 85%). Oil used is GM #19259487 (Dexos 0w20) which should be the same as ACDelco 10-9116. Filter was ACDelco PF63. I did install a Volant CAI kit at the beginning of if this OCI. It uses a Donaldson PowerCore air filter. Looks like its working just fine. Glad to see iron levels have dropped but copper is still up there. Maybe these engines just shed a lot of copper? Doesn't appear to be any fuel issues that are sometimes associated with DI.