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Old 09-01-2014, 02:09 AM   #3 (permalink)
oil pan 4
EV convert
 
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Join Date: Jul 2011
Location: NewMexico (USA)
Posts: 9,808

Sub - '84 Chevy Diesel Suburban C10
SUV
90 day: 19.5 mpg (US)

camaro - '85 Chevy Camaro Z28

Riot - '03 Kia Rio POS
Team Hyundai
90 day: 30.21 mpg (US)

Bug - '01 VW Beetle GLSturbo
90 day: 26.43 mpg (US)

Sub2500 - '86 GMC Suburban C2500
90 day: 11.95 mpg (US)

Snow flake - '11 Nissan Leaf SL
SUV
90 day: 141.63 mpg (US)
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It depends on the vehicle.

In the bug, it gets up to 3mpg better with midgrade gas and I know of no source of ethanol free gas other than RUG. So for that one ethanol free does not get the bug better milage.

When we had a 4.6L 2000ym Lincoln town car there was up to a 2 MPG difference on ethanol free, so it wasn't worth the higher price of the ethanol free.

The 2008 3.3L Hyundai sonata gets 3 to 4 mpg better on ethanol free so for that car it is worth it when we can get eFree.

Bottom line, test it.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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