E45 blend with the Cobalt, not all my typical driving, wife driving 200 miles AC on, me driving with her 40 mile at 75 AC on. 35.8 indicated, 36.2 calculated, per energy content 36.9. Filled with E0 right back to 45 mpg on normal driving.
(Edit: the first 70 miles of the E45 that was my normal driving car indicated 37.0)
Last edited by roosterk0031; 08-14-2013 at 12:06 PM..
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