To avoid being ripped off when buying gasoline, apart from choosing reputable gas stations, doing honest business or being aware of tricks by pump attendants, another commonly mentioned tip is to choose the right time, preferably early morning or late evening. Do you know why you shouldn’t refuel at noon, especially in hot weather; how does this relate to saving money?
Not everyone knows why you shouldn’t refuel at noon.
Why shouldn’t you refuel at noon?
Like other substances, gasoline expands or contracts with temperature changes. Compared to other fluids, the difference in volume of gasoline at different temperatures is quite noticeable.
Usually after a night, due to spending several hours in a cooler environment, gasoline will contract, reducing its volume. At normal temperature, a gallon you buy (equivalent to 3.7 liters) is truly a gallon of gasoline. When refueling at the hottest time of the day, you pay for 10 gallons but actually receive only 9.1 to 9.3 gallons, the remaining portion is just gasoline vapor, not gasoline.
For example, your car’s fuel tank holds a maximum of 20 gallons of gasoline. In the morning when the temperature is low, when the gas pump automatically stops, indicating that the tank is full, there are exactly 20 gallons of gasoline in your fuel tank.
But by noon on a hot sunny day, things are different. When the gas pump automatically stops, there are only 18.2 to 18.6 gallons of gasoline in your fuel tank. That is because at this time, the 18.6 gallons of gasoline expands greatly and occupies a volume equivalent to 20 gallons. So if you refuel with 20 gallons of gasoline at midday, in the blazing sun, you will lose about 1.4 gallons. That is why you shouldn’t refuel at noon.
Some notes when refueling
To get the most out of your gasoline purchase, you can consider the following suggestions.
Refuel by volume
Many people have a habit of refueling based on the price, but this is a mistaken way that wastes fuel. The amount of gasoline calculated by price will be difficult to accurately match the volume, and the loss will always lean towards the customer. Therefore, refueling by volume is more beneficial.
Don’t fill the tank
Asking the gas station attendant to fill the tank will lead to fuel wastage due to the operation mechanism of the gas pump. When the tank is full, the gas nozzle will touch the surface of the gasoline and at that time, the pump will automatically suck back to prevent overflow. The amount of gasoline has already been pre-calculated for you.
In addition, pumping just enough fuel for the distance you travel will help reduce the weight of the car, and when the car is light, fuel consumption will be minimized. Therefore, if you are not going far, you do not necessarily have to fill the tank.
Choose gas stations favored by taxi drivers
Taxi drivers will have experience in which gas stations operate honestly based on their work experience as well as their habit of paying close attention to the amount of fuel when refueling. Therefore, choosing gas stations that taxi drivers often visit is a good tip to avoid being ripped off.
Source: VTC.vn
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