[jhein]

Originally Posted by hurryinhoosier62

Here’s the problem with oil analysis; it requires multiple tests to establish a trend. They are correct; slightly elevated lead results COULD be nothing more normal break-in IF lead was still used in engine bearings. Modern bearing are faced with babbitt which is predominantly tin and antimony. If I were you I would pull another test when the engine has at least one thousand more miles on it along with an oil filter inspection.

So if the bearings are not faced with lead then that that would mean it's coming from deeper layers of the bearing (assuming that's still got lead) or somewhere else?

They mentioned fuel as a source. I buy my gas in bulk and it's 92 octane non-ethanol gas. I add Sta-bil and Lucas fuel treatment. I guess those could contain some lead.

They also mentioned blow by. My cold cranking compression was 175 psi +/- 2 psi. So I doubt I have excessive blow by.