Sorry to resurrect this 'zombie' topic, However as I have been viewing an exponential number of 'cam & lifter' failure posts
lately---
Mr Tim, 'virgin' castings (or forgings) use water soluble oil in the machining process,--- to protect the tooling
& produce an 'engineering tolerant' build... Tooling is Big $$$$ !!!!
Alu, Ductile Iron (black wonder metal) & Steel are still porous :)--- Picture a newborn :) that needs Mothers Milk...
lol, Fossil oil ( & maybe a can or two (2) of ZDDP) & heat cycling--- then the Moly Paste ---
---I will defer to My most learned constituents here, & await correction---
