Want this question answered?
Use 91 octane or higher octane rating premium gas for the 2009 Lexus RX350
Yes. Using a lower grade of fuel then is recommended will reduce your mileage, performance, and increase your emissions. You can always use a higher grade as well.
You should be fine with 91 octane. The higher the octane, the more you engine will like it, but 91 octane is enough for your ES 350.
Gas like water H2O is better to use and run smooth with it. :-)
Premium, 91 or higher
yes u can, but there will be some loss of horsepower, other than that u're ok.
That's what you're supposed to use.
You should use only premium in the 2009 rx350. If the manual says premium gas only, then you should stick with it to avoid any problems that may arise.
The 2009 Lexus IS-350 runs on premium unleaded (required).
The 2009 Lexus IS-F runs on premium unleaded (required).
The 2009 Lexus IS-250 runs on premium unleaded (required).
93 octane, one of the top tiers if available