I suscribe to auto week magazine, and they have this article were they add 3 oz. per ten US gallons in gasoline and 2 oz. per ten US gallons in diesel fuel to increase milage by a whole bunch... It works through better vaporization to improve combustion efficiency... What do you guys think... I know their are some smart people who lerk around here so I thought I see what you all thought...
http://www.lubedev.com/smartgas/additive.htm
http://www.lubedev.com/smartgas/additive.htm