I called Comp Cams to see what
oil they recommended for flat tappet cams after break in. The tech rep said the break in is the most critical part. Once the cam is broke in you can use any premium
oil you choose.
I searched Bob The
Oil Guy
Zinc
Mobil1 .858
Brad Penn .861
Shell Rotella 1.218
RedLine 1.350
Chevron Delo 1.362
Mobil MX4T 1.802
Royal Purple 1.901
STP oil treatment 1.959
I contacted Mobil Oil about using Mobil MX4T Motorcycle oil in a high performance engine using a flat tappet cam. They said the Mobil MX4T would be an excellent choice due to the high
zinc content.