Filling up at the pump is a daily occurrence for millions of drivers. However, the common practice of forcing the tank to fill after the automatic triggering of the nozzle carries risks that are often overlooked. Here's why it's best to stop as soon as the pump stops by itself.
A security system to be respected
When we fill up our vehicle, whether with petrol or diesel, the pump nozzle is designed to stop automatically once the tank reaches a certain filling level. This mechanism is not there by chance: it is an essential safety system.
Despite this, many drivers have taken to continuing to fill their tank by manipulating the nozzle to force the fuel to flow. This practice, although widespread, is not recommended for several important reasons.
The Hidden Dangers of Overfilling
Contrary to what you might think, continuing to fill the tank after the automatic trigger provides little or no additional range. In reality, this “extra” fuel may never reach the main tank.
Modern vehicles are equipped with an overflow drain system that releases excess fuel for safety reasons. So any extra fuel you try to add will likely end up being drained away, representing unnecessary waste and potentially harmful to the environment.
In addition, modern tanks usually have an activated carbon filter in their upper part. This essential component is responsible for absorbing and evacuating fuel vapors. Overfilling and repeated filling can damage this filter, leading to malfunctions and costly repairs.
The complex composition of fuels
It is important to remember that gasoline and diesel are complex mixtures containing many chemical compounds. In addition to hydrocarbons, they contain antioxidants, lubricants, antifreeze agents and a group of substances called BTEX (benzene, toluene, ethylbenzene and xylenes).
Among these components, benzene is particularly recognizable by its characteristic odor. These substances, although necessary for the proper functioning of engines, can be dangerous in case of prolonged exposure or incorrect handling.
Exceptions to the rule
There are, however, situations where the gun may stop prematurely, for example due to the presence of gas in the circuit. In this case, it is indeed necessary to wait a few moments before resuming filling.
It is important to distinguish between these premature shutdowns, which usually occur shortly after filling begins, and the normal shutdown that indicates the tank is full.
Tips for optimizing your fuel consumption
To reduce the frequency of your visits to the gas station, here are some practical tips:
By adopting these good practices, you will not only reduce your fuel consumption, but you will also help preserve the environment and extend the life of your vehicle.
Filling up with fuel is a simple gesture but one that deserves our attention. By respecting the normal operation of the pumps and avoiding overfilling, we preserve our vehicle, our wallet and the environment. The next time you fill up, remember that the first “click” of the gun is there for a good reason!