need some help clarifying the vr1 race oil

Valvoline makes a oil that says either Not Street Legal or Not For Street right on the bottle. I can't remember which but I think it's Not Street Legal. This is what you want to run in your flat tappet motor to keep your cam alive. I purchased mine at NAPA or better yet find a shop that sells Brad Penn racing oil. On a good tight motor stay with the lighter weights like 10W-30.