Yes, you can use 87 octane fuel in a 2009 Lexus RX350. The owner's manual specifies that the vehicle is designed to run on regular unleaded gasoline with an octane rating of 87. While using higher octane fuel may provide slight performance benefits, it is not necessary for the RX350 and will not significantly improve performance or fuel efficiency.
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.
The 2015 Lexus RX 350 is designed to run on premium unleaded gasoline with an octane rating of 91 or higher. While it can use regular unleaded gasoline (87 octane), using premium fuel is recommended for optimal performance and fuel efficiency. Always refer to the owner's manual for specific fuel requirements and recommendations.
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.
93 octane, one of the top tiers if available
The 2009 Lexus IS-F runs on premium unleaded (required).
The 2009 Lexus IS-250 runs on premium unleaded (required).