One of the regular servo`s I visit has now got 100 octane fuel wich has 10% ethanol , or E10 wich also has 10% but is 95 octane, I know that it is in eastern states but I have never seen it here in Perth. My question is How does it perform in a twin cam compared to a 98 octane without ethanol, is there any noticable difference? & is there any problems with engines down the line, your thoughts ?
well never seen the octane on an ethanole pump in the servo just E10 how do we know what octane?
but ethanole is like alky so needs about 9afr were normal petrol needs about 12 to 14afr but @ 10%? you can do the numbers, but i'm thinking that 100octane ethanole is probably 85% ethanole like the V8 supercars use . i used to race & run Alky & it seemed to use twice as much fuel.but you need high comp to get the most from it.
I stopped at a servo selling ethanol blended fuel about a few weeks ago. Tank was almost empty and I didn't want to risk getting caught out. I put in about 5 litres of the 98 or 100 stuff just to get by for until I got back home from cricket training. I didn't notice anything different, but took it fairly easy until I was able to get to another servo the next day and fill her up with 98 octane, normal unleaded fuel.