If you use the "first click, no more gas" method of filling up a tank (nothing wrong with that), you will have to live with the fact that the first click may come at different points in the fill process. I have had it click off at 5 gallons, when I *know* I need to have 7 more. I just tell the petroluem dispensing technican that the click was in error and they continue along.

Thus, the pump, the ambient temperature, the amount of gas left in the tank, and the price of coffe will influence when that pump will click off.

Therefore, remember, that time and data are your friends! As you accumulate your tanks and fillups, the MPG overall will level out and approach the actual LMPG for the car.

-Charlie...