Loved yor article about the RX 350 regular gas. How about the NX300? Not the h.
Know nothing about the article.
Is your question about which octane to use in your car? It is in the owners manual. It might be inside your gas door. You can always go with a higher than specified octane, but never lower.
The RX 350 owners manual states premium but CaTalk says use regular. Question is can the NX use regular.
People on this site have no idea what article you are referring to . If the manual says premium required that is all you should use . If it says premium recommended than yes you can use 87 regular .
A simple web search found that the 2019 Lexus NX 300H has 87 octane unleaded listed as the fuel.