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Originally Posted by bluejoey
I recently bought a 95 Tercel, and got 37 mpg on my first tank. The majority of gas stations in my area have E85 gas, which presumably means the gas is 85% ethanol and only 15% gasoline.
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That's right.
But I'd be surprised if all the gas they have is E85
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I checked my manual, and it recommends not using any more than E10.
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In order to use E85, the ECU should be able to compensate for it, and the valves / valveseals should be hardened to withstand the higher burning temperatures and lack of lubing - you basically get the same valve-issues as with LPG.
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Presumably this car has been filled for years with E85, since it's practically all you can get here.
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You sure about that ?
E5 or E10 is normal, but E85 can't be run in cars that aren't adapted to it.
It's possible to run a car on it though (Brasil has been running on ethanol for decades).
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b.) if it's also costing me several mpg.
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Ethanol has less energy in it than gas, so you'd need more gallons of E85 than gas to go the same distance.
The additional fuel use is between 10-25% on E85 cars sold around here.