Filled up again today with 85 and 10% ethanol. We paid 166.9 per gallon. That is the lowest price I have paid in years.
That's WAAAYY better'n what we pay here!! In South Aust atm, our 91 RON ULP (which equates to about your 85 MON or whatever) costs us AUD $0.98 per LITRE, and there's almost 4 Litres in every US Gallon, so that brings our cost for equivalent volume up to about AUD $3.70 per US gallon or a bit more, altho that is BEFORE you take the value difference between our AUD & US dollars into account!! Still, we are paying a fair bit MORE for our fuel! Oh, and our 95/98 RON ULP is ethanol free (at least without additional 'on pump' signage) altho we can get E10 or the lower RON fuels with up to 10% of ethanol in them & there's even E85 available for those who are game!
Interestingly enough, while ethanol has a higher 'octane rating' than straight petroleum, which means that by adding 10% ethanol to 87 octane gas, it brings its 'octane rating' up close to 90; adding 10% to 91, it will bring its 'octane rating' up to the equivalent of about 94 RON; BUT, there is about 30% less energy in ethanol; so at a 10% mix, that means about a 3% increase in your fuel consumption if all other things remain equal.... which surely means that those using 10% ethanol fuel should hope it's more than 3% cheaper?!
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Originally Posted by ARtraveler
In South Aust atm, our 91 RON ULP (which equates to about your 85 MON or whatever) costs us AUD $0.98 per LITRE, and there's almost 4 Litres in every US Gallon, so that brings our cost for equivalent volume up to about AUD $3.70 per US gallon or a bit more, altho that is BEFORE you take the value difference between our AUD & US dollars into account!! Still, we are paying a fair bit MORE for our fuel! 
Oh, and our 95/98 RON ULP is ethanol free (at least without additional 'on pump' signage) altho we can get E10 or the lower RON fuels with up to 10% of ethanol in them & there's even E85 available for those who are game! 
