Quote:
Originally Posted by aerohead
I GOOGLED thermal expansion coefficient for gasoline.0.000950 is the value given,and at one site,they ran a calc for a 10-degree C variation in temp,which gave 1% change in volume.
Since most tanks are air-cooled,and a very small return volume is mixing with a very large tank volume,and the tank volume is cooled as the car moves,the actual tank fuel temp increase may be insignificant.
A belly pan would change the equation.
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Ok, guy claims a 45°C (80°f-160°f)difference between air temp and tank temp, so 4.5% difference in volume would that significantly change mpg?