1. The best time to fill up your gas tank is in the morning and evening.

Gasoline is priced by volume, but liquids expand when heated and contract when cold.

If you fill up your tank in the morning or evening, the same volume can get you more gas, and if you save it over a long period of time, the amount of money we save will not be small.

The best time to fill up is between 5-8am, when the temperature in the tank is at its lowest.

It is also not suitable to fill up gas when there are many people, because when two gas pumps operate at the same time, it will cause impurities at the bottom of the tank to roll up and affect the quality of the gas.

2. If you don't drive often, you shouldn't fill up the tank.

In case of little use, it is best to maintain a low amount of gasoline in the tank, because gasoline will deteriorate over time.

3. Before going on a long trip, you should fill up with gas.

New gasoline will make our engines perform better on the highway.

4. When driving in the city, you only need to fill the tank up to half or 2/3 full.

When driving in a crowded city, stopping and going, if we fill the tank full, it will increase the burden on the engine, and will make your car consume more fuel.

5. Refueling should be based on the number of liters rather than the amount of money

Many people have the habit of filling up gas by the amount of money. Although it is very convenient, rounding up will cost us a lot of money in the long run.

6. Do not fill up at a gas station that has just been refilled.

If you go to a gas station and see a tanker parked outside, you should not fill up there. Because when the tank is filled with gasoline, the impurities at the bottom will roll up, and when you fill up the tank, those impurities will be poured into your car's gas tank.

With this method, although the savings each time is not worth much, but the old saying goes "ants carry for a long time, eventually the nest will be full". If we form the habit of filling up gas like this, then in the long run we will save a not small amount of money.

Notes when refueling:

- Trigger:You should fill up by the liter because you can cheat by money, but you can't do anything by the liter. People tend to fill up with even numbers like 20, 30, 40, 50 when filling up gas.

For example, if you pour 50 thousand, you only need to pour 30 thousand, press 2 times and it will jump to 50 immediately. As for how to press, only the gas station employee knows because I didn't ask more. The easiest number to cheat is 35 thousand, and the numbers that are difficult to cheat are 31, 32... 45, 65... -> this way, there will be 1 employee standing inside with the task of pressing, 1 employee standing outside.

You can fill up by the meter at both regular and e-gas stations (e-gas stations are easier to fill up by), so the staff advised me to fill up by the liter or odd, and to look carefully at the meter if there's someone standing inside.

- Stacking:This method is probably known to everyone, is to pour 10,000 on this person and then pour it on another person. This method depends on the person’s face, girls riding scooters and talking on the phone without concentration are most likely to get caught.

For example: there are 2 gas stations running and one side has 10,000, if you hear the engine running, you know the person inside is signaling for the person outside to dump the gas quickly, maybe pulling the station on this side to dump the station on the other side. If the customer finds out, they will say that the person inside forgot to dial the number, apologize and that's it.

These employees have a monthly salary of 1,500,000 VND but they spend lavishly and have a lot of money because each employee can enjoy a "difference" of 50,000 - 300,000 VND per day.

Gas station fraud is a common occurrence. They have many "tricks" such as 2 people standing at a pump like above, one person filling the gas takes advantage of the customer's carelessness by pulling out the pump nozzle and the other person immediately presses the reset button to 0.

- Another "trick" is when you fill up 20,000 for example, when the meter reaches 16,000, they press the pump button right at the handle, letting the gas flow back in, then press the pump button again and only air comes out, the meter still jumps but no gas flows out, this trick is used very often, if you don't believe it, pay attention and try it when you go to fill up your gas tank.