[Formulajones]

On a bearing lead would have been the outer protective layer, after that layer you'll see high concentrations of copper which you dont have in your analysis.

Thing is I don't think they use lead anymore as the outer layer of a bearing that I'm aware of and tin is low too which I think is used as a replacement for the lead so I tend to think that's coming from somewhere else.

Being a new engine id do just as Hoosier recommended and go another 1000 miles and check again and compare.