yes, a myth that won't go away
perhaps the most successful 'thought virus' to spread through the internet
once, fuels for gasoline engines were important weapons of war
you can now go back and read USA, British, Nazi and Japanese fuel research from WW-II
nearly everything was tried from 1918 to 1945....
yes, including acetone
want to improve your fuel economy
with a fuel related add-on?
Concentrate on raising your compression ratio to the max, and compensating for the wide-open throttle detonation with an alcohol/water injection kit, like those sold by Snow Performance, or others
is something being hidden from the USA citizen?
well, it is not really hidden
but our engines are getting about 30% poorer fuel economy than they could get,
if only the compression ratio were raised,
but the present compression ratios are low,
because of the NOx pollution regulations
The HC and CO pollution regulations do not make fuel economy worse
there is some hope on the horizon,
as Honda claims they nearly have perfected a NOx reducing catalytic converter than can operate at lean air to fuel ratios