E85 $2.20 vs $3 = cheaper per mile. (74% of cost)
Need to really compare E85 @ $2.20 to E0 & $3.30 (66%)
My research came up with E85 having 72% btu's of E0, 74% of E10.
2010 Impala 29-30 mpg E10, most resent E85 3 tank was 24.4, (85 - 81%)
2002 Suburban 15.2 down to 12.4 (18% loss) (30 E85 tanks vs 35 E10)
It's under $2 in some places as E producers are cutting the Oil company out of the middle and selling direct to the stations.
GM L83 5.3 ffv makes more HP and torque on E85, 11:1 CR.
http://gmauthority.com/blog/gm/gm-engines/l83/#tab-2
E85 is actually E70 during cooler months, no starting problems.
I think ethanol is generally denatured with gasoline before it leave the factory, otherwise it's safe to drink (denaturing is just adding something so it's not consumable, it's 100% same alcohol that people drink. Everclear without the 5% water.
"Ethanol Producers are required to keep all alcohol denaturing records. The Ethanol Producer may denature alcohol by adding gasoline or natural gasoline to it in amounts equal to at least 5 gallons of gasoline for each 95 gallons of alcohol. The alcohol may also be denatured by any other method common in the industry. All alcohol for in-state sale or distribution must be denatured prior to being delivered into a delivery vehicle. Splash blending is not an acceptable means for denaturing alcohol"
http://dor.sd.gov/Motor_Vehicles/Mot...20PRODUCER.pdf