Best premium gas (octane being equal)?

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#1 (permalink)

07-18-2010, 07:16 AM

Goopie 18

CC Member

Join Date: Jul 2005

Location: Punta Gorda, Fl

Cobra Make, Engine: SPF 2473, Roush 427R

Posts: 203

Not Ranked

ethanol/non ethanol

All my local stations carry 93 octane unleaded. I found a station that sells ethanol free 90 octane gas. Which would be better for my Roush 427R? Is 90 octane ethnol free gas as powerful as 93 ethanol?

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