"As for oil type and brand, lots of debates on that. You might consider one of the oils for diesel engines. "
Actually there are different detergents in the diesel oil like Delo, or the Shell rotella , that are not helpful for a naturally aspirated motor. They do contain a little bit more zinc, but are counter-productive because of the other additives specific for diesel motors. I have researched this some. The previously mentioned Joe Gibbs oil, I think Royal Purple may make a special high zinc oil, and the classic car oil, would be the best for it. I think you can also use the Lucas break in oil, along with just your typical motor oil as Jano stated as well, and be in good shape.