Quote Originally Posted by Fredoops View Post
BP E10 in NSW is only 91.
Caltex E10 in NSW also 91 (also QLD)

88 Octane +10% ethanol = 91.

You've made the assumption that the petrol refineries only refine 91 then add 10%.

They don't. Some refineries refine the petrol to 88 octane then add ethanol to boost it to 91. it's cheaper to make than 91octane +e10 to 94/5

You cant argue with physics, all addictive being equal E10 fuel also has less energy content than pure petrol, your fuel consumption would go up.

Even by NSW government (who made E10 compulsory in NSW in replacement of 91), then themselves concurred that E10 will increase the fuel consumption by almost 3%.

Also, ethanol has WATER, for every 60 litres of E10, there is 300ml (a glass full) of H2O in the fuel tank. it dilutes the fuel and makes the liquid MUCH more volatile.

http://www.fuel-testers.com/gasoline...hanol_E10.html
Ah, I guess it's different in NSW then. In Vic, I believe legislation requires ULP to be 91 RON, where 10 years ago, it used to be as low as 87 RON. NSW may have taken a different stance since they basically forced E10 into all petrol stations.