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I know that when I ran 3 gallons of E85 along with ~7 gallons of 87 octane (up to 10% ethanol here in MN), I got worse gas mileage in my VX. So I was basically running 32.5% ethanol in that tank (somebody correct me if my math is flawed). Maybe I'll try running only 2gals mixed in this next tank and run like that for a few tanks. Right now, E85 is ~$2.15/gallon and 87 octane (e10) is $2.75/gallon. If anything it will help clean my combustion chamber, valves, fuel system and save me a little money.
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