Has anyone seen valid information on techniques for putting gas into our cars (any kind of car). I've seen a email that states various percentages of savings by 1) Not using the faster trigger positions, 2) Not filling your car when the tanker is filling the station's underground tank, and 3) Not letting your tank level fall below half. Rationale was given for each of these points.
And while I'm at it, is there any point to avoiding the gas that "may contain up to 10% ethanol"? In other words, the reduction in gas mileage with ethanol vs the slightly higher price of the same gas that contains NO ethanol.