Ethanol conservatively has an octane rating of at least 108,some sources say as high as 116 AKI depending on RON, MON,or AKI (AKi is what we use in USA.
Fuel comes off the tanker at Port Everglades ,next to Ft Lauderdale,FL
Lets say it is ALL 85 octane.
Ethanol is added at each departing fuel truck.
Probably in the case of Chevron the fuel injector cleaner techtron is added also,or
Shells nitrogen,BP invigorate etc. Some type of cleaner will be added.
So at the no names like Tom Thumb even something is put in.
Now again lets say the marine ocean going tanker has 85 octane.
90% add 85+85+85+85+85+85+ 85+85+85 (or 85x9)=765
now add 10 % 0f ethanol at 108 octane . 765 +108=873 OR 87.3 octane mixed or E10 fuel.
less conservative ,83 AKI octane x9 parts=747, plus (122 AKi alcohol octane747 +122=86.9 AKI octane.
My 2007 Toyota camry with 35,000 miles gets 31 mpg on E10 and 32 mpg on Rec 90 non alcohol. i have tested it about 10 times with the same results.
Here in the FL Keys you can buy ALL the Recreation 90 octane non alcohol fuel you want.
I know of at least 10 stations from N. Key Largo to south tip of Islamorda,~30 miles on US 1.
It now ranges from 3.40 -3.65 a gallon at land base gas stations. The station just has to dedicate a seperate underground fuel tank and pump or gas selection buttons..I guess the stations in Jax,FL are reluctant to dedicated a seperate 90 non alcohol tank.
yes you can buy it for your car if you like. we use it in the lawn mower or any type engine that has a vented fuel system.......We buy it via dock side fuel truck at ~3.85.
We have 6700 hours since Sep 05, on our charter boat at 1.2 mpg,14,500 lb 33 world cat w bridge.
gents that is over 13,000 gal of fuel
We have had ZERO fuel problems.
To answer you filter question , I don't know of any filtering process.
It would have to be cracked like a whiskey still,even then I don't know what you would get after you distilled the E10.the remaining ~90% would be sucking sludge like some other forum member calls e10.