Originally Posted by
Just Dave
how in the hell is the motor going to know whether the alcohol came from the fuel tank or from another tank in the trunk?
alky DEFINITELY raises the octane, unless you are spraying it on the outside of the motor for some reason?
Do some more checkin on it. Running e-85 or better (e-9

, through the fuel system, you have 85% or better mix. Injecting alcohol is done at a much lower percent