what oil to use

Nope, I get it off Amazon and its the not street legal Valvoine. You are right about pros using roller cams but they also build motors for their customers and them selfs not everybody can afford a roller cam or think its neede for a street motor.

Some of these guys claim they can run 12-1 compression too with pump gas with the right cam and they are talking 250 @.050 for a nice "mild" street motor.

I am just say what I seen, they won't touch these oils you can buy at a reg. store anymore. Maybe they are nuts, maybe I am too.

I leave the oil in 4-6 months too, like I said, no problems so far.