Been there years ago, learned a few things but everyone has their own opinions about oil. Oil change interval is more important than which oil. You can't go wrong with most major brands. I'll be using Mobil 1 from Walmart.
Just make sure to read it all, because the Dexos 1 Gen3 oils are far worse than the Dexos 1 Gen2 oils. Can't really go wrong with the top 75 ranked oils.
Royal Purple is not a very good synthetic oil. Pick an oil above 105,000 psi
https://540ratblog.wordpress.com/
Ranked 183. 5W30 Royal Purple API SN synthetic = 84,009 psi
Ranked 9. 5W30 Amsoil Signature Series, synthetic = 134,352 psi
Ranked 38. 5W30 Quaker State, Ultimate Protection Full...