Premium gas vs regular observation..

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May 3, 2015 | 12:37 PM

#16

Hoovey689

2UR-GSE Owner

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Joined: Oct 2008

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From: California

Quote:

Originally Posted by LexBob2

Minor point, but I think it was MY2012 (the last year for the previous gen ES350) when regular became OK for the RX and ES.

Ah thank you for the correction.

May 3, 2015 | 02:56 PM

#17

rxonmymind

Thread Starter

Lexus Test Driver

Joined: Aug 2014

Posts: 1,252

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From: Sacramento, CA

Realized 23.75 mpg on 87 Arco vs 24.75mpg on 91 Arco. Same route to work all week and this was with mixed city driving 20% and 80% freeway. Not bad.
Now on to "boutique" gas. Shell 87 with nitrogen. Curious to see if it'll improve the mpg or not. I DO notice it's $1.00 per gallon for the same octane.