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Filling up the car tank is a common habit of many people when they go to the petrol pump. The ‘tank full’ option seems convenient to save the hassle of frequent visits to the pump. But, filling the car tank to the brim is not always beneficial. Some important advantages and disadvantages of this are as follows,

Advantages of tank filling

• Saving time and fuel: No need to go to the petrol pump frequently. This not only saves time, but also saves fuel wasted in trips to the pump.
• Useful on long journeys: When traveling on the highway or on an unfamiliar road, there is no guarantee when the next petrol pump will come. If the tank is full at such a time, there is no stress of travel.

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• Fuel Pump Safety: In modern cars, petrol or diesel acts as a coolant to control the temperature of the fuel pump. If there is enough fuel in the tank, the fuel pump does not overheat and extends its life.

Disadvantages of tank inflation

• Gasoline spoilage and smell: Every car’s tank has some empty space left for fuel vapor. Even after the auto-cut at the petrol pump, if the petrol is forced from the top, the excess fuel goes into the ‘evaporative emission system’. Due to this, petrol leaks and the car starts smelling bad.
• Vehicle damage: Excess petrol can damage the ‘charcoal canister’ part of the car. Repairing this part costs a lot and also affects the mileage of the car.

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• Vehicle Weight and Mileage: Filling the tank to the brim increases the weight of the car. Excess weight puts stress on the engine, which can reduce mileage slightly.
• Security Risk: In summer, when the temperature is high, gasoline spreads and vapors are formed. If there is no space in the tank at all, the pressure can cause a leak and create a fire hazard.

Brief advice

It is not wrong to fill the tank of the car, but filling extra petrol from the top when the nozzle at the petrol pump automatically cuts off should be avoided. Fueling up to ‘auto-cut’ is the best option, both safely and economically.