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- - fuels (https://lexusforum.com/forum/lexus-rx-16/fuels-1015/)

sj633

07-20-2008 05:00 AM

fuels

does anyone run reg. gas? is it a problem if you do? i a wondering if it would make a difference in gas milage.

HERITAGE1909

08-22-2008 07:56 AM

RE: fuels

My dealer recommended regular fuel for my 2008 RX350. It runs great and gets better gas mileage than my 99 Mercedes ML 320 did. No problems at all.

khooper

08-22-2008 09:15 PM

RE: fuels

The higher the compression ratio, the more octane molecules are needed in the gas (as you know 89 octane has less then 93 octane). Some cars that have high compression ratios need more octane because octane will not spontaneously combust like hexane, etc when compressed.
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