My thinking is that the engine is run at the factory, and the oil changed. This might not be the case but it's what I hope. My first oil change had elevated wear metals, but so did the 2nd and so will the 3rd. They decline every time until some point. But IF your main goal is to remove wear metals when the engine is young it's going to take more than one early oil change, I don't think they will wash out completely with 1 change. You chould probably change every 500 miles until they levelize if concerned about it.