I found an interesting article about ZDDP in oil on the Amsoil website: https://www.amsoil.com/newsstand/classic-and-vintage/articles/reduced-zddp-a nd-wear-protection/ John Spaur -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://autox.team.net/pipermail/healeys/attachments/20170514/58748afc/attachment.html>