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Old 10-15-2012, 08:15 PM   #14 (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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Quote:
Originally Posted by serialk11r View Post
That's a lot of E85! Just for kicks I decided to add 1.3 gallons of E85 to the 9.2 gallons of 87 (we only have E10 in California)
Not really, I have run up to 60% e85 in the past and that was on a 98 buick. The cobalt seems to have no issue with any ethanol blend but it does kick the MPGs down a lot if I am more than 30% ish.

Normally I don't mess with E85 anyway because its not $0.99 a gallon anymore like it was 7 years ago. Thus not worthwhile but with gas prices higher than normal I thought about testing the $3.499 e85 with non-e10 87 octane gas (most of the stations aren't selling it again, blast!)

Anyway this was mainly to test the fuel economy and performance aspects, I don't get the hop I normally get during cold starts but other than that performance seems similar (to the butt o meter) and FE per the lie o meter is within the margin of error but I definitely notice poor fuel economy during start up and better than expected once warm. So for cold weather in town = bad, highway = good
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