I second the FHS oil. This is what my engine builder recommends.
This same subject has been discussed in every race forum that I have ever been on. NHRA, NASCAR, Late model, pony stock, Boats, motorcycles and every other forum that you can image.
Bottom line is this.
Buy a quality oil, Change it often. That is the only thing that I have seen a large percentage of people agree on. I have used many different types of oil in many types of engines and never had an oil related problem.
Biggest difference I see is some oils do not prevent rust and others do! And I don't have a list of them. I just use FHS and that is it, but there are many,many quality oils out there. I run big alcohol engines and change it between practice and the race. So I use almost a quart of oil each race day. Wow, $12 for oil and another 10 for a hamburger , fries and drink, $20 for good Cigar after the race. Priceless.