What octane fuel are you running?

[KrackaC8]

Please vote; voters are anonymous.

(R+M)/2 octane rating (standard method in the US)

 

[KrackaC8]

Murphy USA 93-octane here now that I've moved. Only Murphy and Sam's Club sell 93 E10 here, everyone else is 91 E0.

 

[Zplz]

Only this for my Z.

 

[Tranzor Z]

3 gallons of E85 on empty along with a full tank of 93 based on my best friend in the ethanol businASS

 

[jacksonmagnet]

Mostly this, or 93, both e10

 

[KrackaC8]

Mostly this, or 93, both e10

How has the Sunoco 94 performed for you? I tried running it on a few occasions in my Corvettes and they always idled & ran a bit rough.

 

[jacksonmagnet]

No issues like that, don’t seem to notice a performance difference between them, just feel better about the 94, I got e0 94 once and that seemed maybe a little smoother, might just be in my head