If I am not mistaken the temperature of the fuel will also cause variance in your fillups. When its hot the fuel expands and you actually get less energy per gallon of fuel pumped. When its cold you will get more energy per gallon of fuel pumped.

I believe they already make a temperature adjustment at the pump in Canada where its colder and retailers are thought to be losing money. Of course there is resistance to make a temperature adjustment in the US where the gas stations are thought to be making out better than the consumers.

 

Olympic Dreams is right- there is a temperature variance, though I suppose the resistance to making a price adjustment for temperature could cut both ways, depending on what time of year you make the adjustment and whether it increases or decreases the price. You say that there is resistance b/c gas stations are perceived as robbing people blind here, but the story I heard stated that the price would actually be adjusted downwards, because stations are really selling people less than a gallon of gas when the temps. change and people just don't know it.

 

You guys should check out this website about flow meters.

http://www.omega.com/techref/flowmetertutorial.html

 

I only fill up in the winter.

 

There appears to be some heated debates on the lack of adjustments for temperature in US pumps. Many folks do not believe that any adjustment is being made when its hot and we are getting less mass in the same volume. I do not believe the issue is completely resolved yet.

http://i-r-squared.blogspot.com/2007...eating-up.html

 

Things expand when they are warmer.

A gallon cold gas has more energy than a gallon of hot gas.

 

Define a gallon of gasoline.

According to the link I posted, you are actually buying a mass of gasoline. For example, when you are buying a gallon of gasoline, you are buying a mass of gasoline equal to the mass of 1 gallon of gasoline at 60 F. Mass does not change with temperature.

 

http://www.turndownhotfuel.com/myths.html

 

If you are gettin 70mpg, you have used slightly over 10.5 gals. to go 739 miles, hence nearly 1.8 gals. left, oi.e. over 100 miles left. GO FOR IT

 

Sorry too late.
I already filled up.

I'm just not sure about capacity, and whether it is determined when stopping at the first click or not.

Didn't want to run dry, or too low damaging my fuel pump by sucking in sediment.

I will NEVER see another 71.65 MPG tank.
I am going faster now.
I have 500 miles on my current tank and 70.7 MPG so far.
(69.4 on the display plus my 1.4 MPG correction factor for the difference between the display and what I calculate at the pump over 31 tanks.)