91 octane really necessary on a RX350?
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The manual says 91+ but I'm wondering if anyone has comment on using 87/89 on most typical driving? Will it hurt the car or just less performance or less mileage?
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Originally Posted by initiald
The manual says 91+ but I'm wondering if anyone has comment on using 87/89 on most typical driving? Will it hurt the car or just less performance or less mileage?
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My personal experience, with an '01 Highlander, and '04 and '05 RX330s is that the increase in mpg more than makes up for the price differential, so I consistently used 93 octane in those vehicles.
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Use 87 in my 400h hasn't hurt the car nor have i felt any performance issues. Ocassionally i will put in 93 but i think it is just to habit because i'm use to putting 93 in my previous cars. Just got an IS350 haven't decided on what i will do. But it all depends on the owner, if the manual states 93 and it makes you feel comfortable then what is the extra $2. Will you notice a difference i highly doubt it.
Ken
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