Premium, 91 or higher
Use 91 octane or higher octane rating premium gas for the 2009 Lexus RX350
93 octane, one of the top tiers if available
at least 91 octane
yes premium gas is required
Premiun Unleaded is required with at least a 91 octane rating.
That's what you're supposed to use.
Each car should have a recommended fuel octane in the owners manual.
" regular " unleaded , 87 octane
unless the vehicle manufacturers instructions specifically state to use high octane fuel, or you have done something to boost the compression ratio, (i.e. supercharger, turbocharger, etc,...) you should be fine running regular 87 octane.
" regular " unleaded - 87 octane
" regular " unleaded , 87 octane
Any gas should be fine. Usually higher end sports car require higher octane gas. Your owners manual should verify what octane you should use. Any Hyundai dealer would have the info for you too.