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Old 09-01-2014, 08:16 AM   #5 (permalink)
Cobb
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Join Date: May 2012
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+1 on the depends part. Gas itself varies from station to station. I can see a 5 mpg difference in buying gas from sheets vs shell or bp. All claim 10% ethanol. Now going with 89 or 93 with the 2 gen insight you see a boost in mpg and performance, but its not cost effective.

Now mixing 4 gallons e85 with regular you see both a performance increase, about a 5mpg boost and an instant savings as e85 is like 25 cents cheaper a gallon.
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