Re: First oil change
Valvoline VR-1. There are many good high ZDDP oils, but the Valvoline is probably most widely available off the shelf at your local store which is why I recommend it. I use VR-1 in my flat tappet engine with no issues. Quality WIX filter (WIX makes Napa Gold filters too). Here is a list of oils many here have used and the Zn and P levels.
'69 Z/28, Lemans Blue/White Stripes, DZ302, Tremec Magnum, 4.10, Procar Elite Seats,
Custom Upholstery, Dynatech headers, 17" VWW V45's, 235/45, 275/40, C5 Front Brakes