RE: making fuel
Ed
I am in no way disputing the simplicity or superiority of the metric system. I was just indicating from my post that once you know the relative proportions and reduce the data to the lowest common denominator, it doesn't matter what units you use. Any size of container may be used for measurement. Fractional container proportions are much more easily measured using a metric scaled bottle or cylinder and far more intuitive than some combination of ounces, cups, quarts and gallons. In addition, it is far easier to calculate and blend a new mix with a measurement system built on powers of ten.
As a laboratory scientist, I use metric measurement exclusively. Your derisive comments were neither necessary nor particularly appreciated.
By the way, 40 cups is 2.5 gallons (US), not 5 gallons.[>:]
Ross