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The heating value of denatured alcohol is roughly half that of unleaded gasoline. The more alcohol in the blend the lower the power and mileage the unmodified car has.
I say unmodified because E85 has 100 octane and can tolerate much higher compression and spark advance than RUG - both beneficial to engine efficiency.
I avoid it like the plague.
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2000 Ford F-350 SC 4x2 6 Speed Manual
4" Slam
3.08:1 gears and Gear Vendor Overdrive
Rubber Conveyor Belt Air Dam
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