If you do a search for oil here you will find an overwhelming amount of information and recommendations. Bottom line is if you are running flat tappet cam make sure you have the proper amount of ZDDP in the oil. This can be achieved by additives such as ZDDPlus, cam break-in additives or using oil designed for Flat Tappet engines. Some brands include Brad Penn and Summit Racing Street & Strip oil.

Personally, I have used ZDDPlus and standard 10-30 for the last couple of years. But just recently picked up two cases of Summit Street & Strip oil when they had an in store sale.