Use 91 octane or higher octane rating premium gas for the 2009 Lexus RX350
The 2009 Lexus IS-350 is a gas-powered vehicle.
The 2009 Lexus IS-250 is a gas-powered vehicle.
The 2009 Lexus IS-F is a gas-powered vehicle.
The 2009 Lexus ES-350 is a gas-powered vehicle.
The 2009 Lexus LS-460 is a gas-powered vehicle.
The 2009 Lexus LX-570 is a gas-powered vehicle.
The 2009 Lexus GS-350 is a gas-powered vehicle.
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The 2009 Lexus GS-450H is a hybrid-powered vehicle.
The 2009 Lexus LS-600H-L is a hybrid-powered vehicle.
Gas like water H2O is better to use and run smooth with it. :-)