>>One thing I can't find anywhere is how long has testing by any one company taken in the past?<<
It would depend on how many tests and number of times repeated (2,3,4,5). Each test could be done just once, but with sufficient number of tests experimental error is reduced. One battery of tests should be sufficient, but the numbers could be slightly off.
Simplest tests could be done in minutes/hours. Take some DF-144, blend it in with various types of gasoline(s), put it in various test engine(s), and take measurements (emmissions, horse-power, total energy, octane rating, etc.).
Doing quality labwork (which requires being slower, more methodical, being careful, precision measurement, keeping experimental errors to a mininum) is what will occupy most of the time. Fortunately Exxon has some of the brighest/best chemists working for them.
Probably simpler to say I don't know. I think it will take a couple of days (mininum) to a couple of weeks (medium) and being extremely thorough a couple of months (max).
Kurt |