David Wood found a website that might be helpful when planning a drive. Can be searched by State and City and includes octane levels. North Carolina list: https://www.pure-gas.org/index.jsp?stateprov=NC

David Wood found a website that might be helpful when planning a drive. Can be searched by State and City and includes octane levels. North Carolina list: https://www.pure-gas.org/index.jsp?stateprov=NC