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Old 10-15-2012, 06:55 PM   #12 (permalink)
rmay635703
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Join Date: Jun 2008
Location: Somewhere in WI
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Silver - '10 Chevy Cobalt XFE
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Well Lie-O-Meter is behaving the same average per it is 47.8mpg ave on this mix and I am in my in town cold weather mode so I expect it to drop further, trouble is my father also drove the car (-3mpg on a 150 mile tank) and its getting cold which takes off 5 to 10mpg on this car easily.

This is actually doing "well" considering the amount of higher speed driving and town driving was done in colder weather. I will know when I eventually fill up if this mix paid off, was a wash (I lean to that choice) or cost more $$$

I chose the mix based on the fact that it cost the same price as plain e10 but had much higher octane, it appears the octane on a 2.2ltr 10.5:1 compression ratio car wins out over the additional ethanol in the tank.

The ethanol MASSIVELY affects my acceleration FE during warmup, bleh 9mpg instead of 18mpg sucks.

Ah well
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