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Old 02-07-2013, 01:32 PM   #15
Sack Rat 2SS

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Drives: Silver SS/RS, Man 6
Join Date: Apr 2009
Location: DFW area, Texas
Posts: 886
Originally Posted by Drew P View Post
I know I will get trolled for asking this, but how many mpg do you anticipate losing due to the E85 conversion? I only ask because I daily my Z, but am very interested in this route.
Drew, when my car was NA and with 3:70 rear gears I was geting 18 to 19 MPG on pump gas in combined city/freeway. The year I was on E85 I got 14 to 14.5 combined. This is on a 7L motor, not a 6.2. Bottom line you should expect close to 25 to 30% less mileage with E85. Puts a damper on taking road trips. Hope this helps answer some of what you are asking.
Silver 2SS/RS Man/6
CTS-V front 6-Piston Calipers,
GM 3.91 Rear Gears
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