Need help with engine oil.

[Vegas69]

A good quality conventional 10w-30 like a Brad Penn is where I'd start unless you road race it and it see's extreme temps. Then I'd go with a synthetic. Your hot oil pressure will dictate the ideal viscosity. If you have over 20 psi at idle hot, you are good to go. If you want to get another 5-10 psi, bump it up a viscosity or two.