I use Driven
oil HR series [HR for Hot Rods]( old Joe Gibbs) it has all the good ingredients plus it clings to metal parts in storage. I'm sure Brad Penn and
Amsoil etc. are good also But driven
oil has a lot of performance followers. Don't worry about the price you only pay once a year for it. As for viscosity 10-40 works for me, not too heavy not too light. I have in depth reasons for using the 40 wt.
Oil is a hot topic