What octane is everyone running?

[Viggen]

93 octane and 26 mpg.

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[Trojan_Actual]

My 2.0 only gets the bestest, which is 91 around here. I notice a difference when going lower octane.

 

[Trojan_Actual]

This engine is designed to meet all emission regulations, and provide satisfactory fuel economy and performance when using high-quality unleaded “Regular” gasoline having a posted octane number of 87 as specified by the (R+M)/2 method. For optimal performance the use of 91 or higher octane “Premium” gasoline is recommended in these engines

 

[Rogueman_1]

Shell 91 in all my cars. No deviation unless road trippin and no Shell around.

 

[Stayingbizzy]

Curious what octane everyone is running. Their experience, and why their running it. At week 2 of ownership I’m currently putting 93 in (potentially has 10% ethanol in it). Roughly $0.20 cheaper per gallon than the 91 “top tier” stuff at the other station(s). Last tank I went 288 miles 17.1/gallon.

This has actually been one of my biggest disappointments. I was getting 16.5 mpg, now that I put 35s, i'm down to 15.5 to 15.8 range. Using the higher octane really hasn't showed any measurable better gas mileage.

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