Filled up the Impala with 3.02 E85 over the weekend, 1/6 less is what it takes to be worthwile for it, 3.65 v 3.02 was close enough. Driving it 9 miles home after filling factory gauge displayed 32 mpg (50 mph). I'm sure my wife will pull that down.
Haven't blended any yet in the Cobalt but last 3 tank comparision E0 to E10 was only 1.6% loss of mpg and about 2.8% cheaper. (44.4 vs 43.66mpg) probably not a statistical difference.
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