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Don't really know how they've spun it to you guys in the States.
We've had this gear in our fuel for probably longer than 10 years as well.
Coming from an Engineering background, the way I understand it is Ethanol is an Alternative fuel. Petrol engines are generally designed to run on petrol and then modified and tuned to allow this Alternative fuel to be used. (eg. "E10 can be used in this vehicle.)
Some engines are designed to run on Ethanol and wear a badge that might say "E85". (up to 85 % Ethanol)* Not our cars*
There's no mechanical reason to introduce Ethanol to Petrol as you get less Economy when using an Ethanol blend compared to straight Petrol so it is not as efficient.
It's not for environmental reasons because if you use more fuel due to inefficiency how is that helping the Planet.
I think the reason we have ethanol is purely financial. Helps prop up the farming sector by making unwanted crops into alternative fuel. Too bad they can't turn those unwanted crops into real food and feed some people but you'll never make Billions doing that will ya.
Petrol in a Petrol Engine..Seems pretty straight forward to me, but I'm old and simple. Will probably be better when all us old buggers drop off and you kids can run your cars on mung bean juice or Possum tears or whatever.
Cheers.
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