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Money Stretching Tips For Pumping Gas
By Mr Ethanol | April 4, 2008
OpEdNews:
The following is adapted from a post on facebook by Mark Diffie. Since the author indicated this should be shared, I thought I would do so here because the information is reasonably useful.
Here are some tips to get more of your money’s worth for every gallon of gasoline you pump.
TIP 1: Only fill up your car or truck in the early morning when the ground temperature is still cold. All service stations have their storage tanks buried below ground. The colder the ground the more dense the gasoline. When it gets warmer gasoline expands, so buying in the afternoon or in the evening your gallon is not exactly a gallon.
In the petroleum business, the specific gravity and the temperature of the gasoline, diesel and jet fuel, ethanol and other petroleum products plays an important role. A 1-degree rise in temperature is a big deal. That’s why these variables are controlled. But service stations do not have temperature compensation at the pumps. Even the trucks that transport fuel are temperature compensated so that every gallon is actually the exact amount.
TIP 2: When you’re filling your vehicle do not squeeze the trigger of the nozzle to its fastest mode. If you look, you will see that the trigger has three (3) stages: low, medium, and high. The slower you pump, the more you minimize the vapors created. If you are pumping at the fastest rate, some of the liquid that goes to your tank will immediately vaporize. Thus, you’re getting less gas for your money.
Topics: Cars, Gas, Money, Tips |
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May 7th, 2008 at 3:50 am
Tip 1. The ground temperature is not at its lowest during early morning hours. Only the air temperature is. There is a big lag time. The ground is massive, and there is energy transfer involved and that takes time to propagate for a massive body. Since I have not taken any actual measurement, I would just speculate that the underground gasoline temperature would be at its lowest around 10:30 am. The air temperature is coolest at about half an hour past sunrise due to the thermal inertia of the land mass. The radiative heat loss which lowers ground temperature would also take some time before it will propagate into the stored gasoline underground. Thus it is ABSOLUTELY FALSE that the best time to get gasoline is during the early morning hours. The heat capacities and the heat storage of massive bodies require time to store and loss heat, not as instantaneous as your speculations.