...longbox55 statement "Proper Break in and assembly is the key" says it all. If my memory is correct a lot of the ZDDP fight started when folks started up new engines without "proper break in" using oils that did not have sufficient levels of it. Cam builders and racing shops produced many articles on this.
IF you use the proper start up on a new engine then you can run engines on "most" any oil. ....(I didn't say ALL oils)
Dump a quart of GM E.O.S. in with your oil in a new engine, and after the PROPER BREAK IN you should be fine. BREAK-IN is the real critical part...especially for Cams/lifters.
OOOK, now I've had my .02.
