Ethanol Free Gas Stations

[eTiMaGo]

Originally Posted by edmscan

I see that ALL the stations in my area are Octane 91 (which of course is like 10 cents / liter or 38 cents a US gallon more). So the big question is ..

Is it worth it (as far as getting better fuel economy) to put 91 octane gas in a Yaris when Toyota I believe only requires 87 octane ?

It's been tested many times, nope...

Is there any possible damage (other than to your wallet) in using 91 octane gas in a Yaris ?

nope...

I can handle the financial difference .. as long as there is some benefit to running a higher octane gasoline.

Anyone have any thoughts ?

Theoretically, the only advantage you would have is when you rev the engine at very high RPMs, the ECU could apply a higher spark advance and thus make a little more power... But I have not personally seen any evidence for this...