Truth Revealed: Is It Myth Or Truth That Refueling In Cold Weather Saves Fuel?

Written by Romário Pereira de Carvalho

Published on 07/06/2025 at 16:05

Imagem: Unsplash

Seja o primeiro a reagir!

Many Believe That Refueling in Cold Weather Ensures More Fuel, But Tests Show That the Effect Is Null

For years, many people believed that refueling their car in the morning or at dusk could yield a few extra milliliters of fuel. The idea was to take advantage of the lower temperatures at these times. As a result, consumers thought they were saving when filling up their tank. But does this really happen?

Does Refueling in Cold Weather Save? How Did This Idea Originate?

The thought behind this myth is simple. The pumps at gas stations measure the volume of fuel going into the tank. In theory, when the temperature is lower, the fuel would be denser.

Thus, the consumer would receive more mass of fuel with the same volume indicated on the pump. This reasoning led many people to choose specific times to refuel.

ARTICLE CONTINUES BELOW

Major Oil, Gas, and Energy Event Will Take Place in Brazil: Macaé Energy Will Gather Petrobras, Equinor, Prio, Among Other Suppliers and Energy Executives for Business, Networking, and Employment Opportunities

The Technical Agenda and the Fair in the City of Macaé Should Boost Discussions on Investments, Energy Transition, and Development of the Oil, Gas, and Energy Chain in the National...

Paulo Nogueira

What Do the Tests Say?

To clarify the matter, the site “Auto Esporte” conducted a practical test. On the day of the experiment, at 8:04 AM, the ambient temperature was 20°C. The temperature of the fuel taken directly from the reservoir was 24°C. In other words, even with the cool morning, the fuel was warmer than the air.

This happens because the fuel stored at gas stations is kept in underground tanks. These tanks have protective layers and are several meters deep. Therefore, external temperature does not significantly affect the liquid inside.

The Safety of the Hoses

In addition to underground tanks, the hoses at gas stations are designed to prevent alterations in the fuel.

In an interview with “Auto Esporte,” engineer Gilberto Pose explained that the hoses have multiple layers of rubber reinforced with steel mesh. This prevents evaporation or deformation of the fuel during its journey to the car.

According to Pose, if there were evaporation in the hoses, it would be noticeable by swelling. Since this does not occur, it is clear that there is neither loss nor alteration in the amount of fuel during refueling.

Conclusion: Myth Confirmed

Therefore, refueling in the morning or at night does not bring any real advantage to the consumer. The external temperature does not interfere in the amount of fuel delivered. The myth, although popular, has no basis in practice.

With information from Excel.

0 Comentários

Mais recente

Mais antigos Mais votado

Feedbacks

Visualizar todos comentários

Truth Revealed: Is It Myth Or Truth That Refueling In Cold Weather Saves Fuel?

Many Believe That Refueling in Cold Weather Ensures More Fuel, But Tests Show That the Effect Is Null

Does Refueling in Cold Weather Save? How Did This Idea Originate?

Major Oil, Gas, and Energy Event Will Take Place in Brazil: Macaé Energy Will Gather Petrobras, Equinor, Prio, Among Other Suppliers and Energy Executives for Business, Networking, and Employment Opportunities

What Do the Tests Say?

The Safety of the Hoses

Conclusion: Myth Confirmed

At over 8,800 meters above sea level, the summit of Mount Everest is made up of rocks that originated at the bottom of an ocean about 500 million years ago and were pushed to the highest point on Earth by the collision of tectonic plates.

Found in one of the most radioactive places on Earth, this Chernobyl fungus may be doing something with radiation that no one has been able to explain to this day.

The U.S. Army receives the first Black Hawk helicopter that can fly without pilots, be controlled by a tablet, and even land on its own during high-risk missions.

With more than 635,000 doctors, Brazil sees competition increasing in large cities, and recent graduates are competing for shifts at an accelerated pace while the countryside still faces shortages.

What can really trigger large volcanic eruptions? Research suggests that gas returning to the magma may be more dangerous than gas escaping from it.

Goodbye expensive popular car: electric vehicle for less than R$ 70,000 starts being sold in Brazil with a range of 200 km and targets those looking to escape gasoline.

With an investment of R$ 612 million, a capacity to process 1.2 million liters of milk per day, Piracanjuba inaugurates a mega cheese factory that increases national production, reduces dependence on imports, and repositions Brazil on the global dairy map.

USA and China compete for Brazil over resources that could be worth trillions — rare earths put the country at the center of a global dispute

Motorola launched the Signature with a gold seal from DxOMark, tying with the iPhone 17 Pro in camera performance, Snapdragon 8 Gen 5 that surpassed 3 million in benchmarks, and a zoom that impresses even at night.

Satellites reveal beneath the Sahara a giant river buried for thousands of kilometers: study shows that the largest hot desert on the planet was once traversed by a river system comparable to the largest on Earth.

The government requests the Federal Revenue Service for a new system to automate the income tax declaration, reducing errors, time, and bureaucracy for millions of Brazilians.

With 74% of companies facing difficulties in hiring, technicians and engineers in renewable energy are becoming scarce in Brazil and are essential to support the expansion of solar, wind, and green hydrogen projects.

Truth Revealed: Is It Myth Or Truth That Refueling In Cold Weather Saves Fuel?

Many Believe That Refueling in Cold Weather Ensures More Fuel, But Tests Show That the Effect Is Null

Does Refueling in Cold Weather Save? How Did This Idea Originate?

Major Oil, Gas, and Energy Event Will Take Place in Brazil: Macaé Energy Will Gather Petrobras, Equinor, Prio, Among Other Suppliers and Energy Executives for Business, Networking, and Employment Opportunities

What Do the Tests Say?

The Safety of the Hoses

Conclusion: Myth Confirmed

At over 8,800 meters above sea level, the summit of Mount Everest is made up of rocks that originated at the bottom of an ocean about 500 million years ago and were pushed to the highest point on Earth by the collision of tectonic plates.

Found in one of the most radioactive places on Earth, this Chernobyl fungus may be doing something with radiation that no one has been able to explain to this day.

The U.S. Army receives the first Black Hawk helicopter that can fly without pilots, be controlled by a tablet, and even land on its own during high-risk missions.

With more than 635,000 doctors, Brazil sees competition increasing in large cities, and recent graduates are competing for shifts at an accelerated pace while the countryside still faces shortages.

What can really trigger large volcanic eruptions? Research suggests that gas returning to the magma may be more dangerous than gas escaping from it.

Goodbye expensive popular car: electric vehicle for less than R$ 70,000 starts being sold in Brazil with a range of 200 km and targets those looking to escape gasoline.

With an investment of R$ 612 million, a capacity to process 1.2 million liters of milk per day, Piracanjuba inaugurates a mega cheese factory that increases national production, reduces dependence on imports, and repositions Brazil on the global dairy map.

Friends have been building a small “town” for 30 years to grow old together, with compact houses, a common area, nature surrounding it, and a collective life project designed for friendship, coexistence, and simplicity.

This small town in Germany created its own currency 24 years ago, today it circulates millions per year, is accepted in over 300 stores, and the German government allowed all of this to happen under one condition.

Curitiba is shrinking and is expected to lose 97,000 residents by 2050, while inland cities in Paraná such as Sarandi, Araucária, and Toledo are experiencing accelerated growth that is changing the entire state’s map.

Tourists were poisoned on Everest in a million-dollar fraud scheme involving helicopters that diverted over $19 million and shocked international authorities.

USA and China compete for Brazil over resources that could be worth trillions — rare earths put the country at the center of a global dispute

Motorola launched the Signature with a gold seal from DxOMark, tying with the iPhone 17 Pro in camera performance, Snapdragon 8 Gen 5 that surpassed 3 million in benchmarks, and a zoom that impresses even at night.

Satellites reveal beneath the Sahara a giant river buried for thousands of kilometers: study shows that the largest hot desert on the planet was once traversed by a river system comparable to the largest on Earth.

The government requests the Federal Revenue Service for a new system to automate the income tax declaration, reducing errors, time, and bureaucracy for millions of Brazilians.

With 74% of companies facing difficulties in hiring, technicians and engineers in renewable energy are becoming scarce in Brazil and are essential to support the expansion of solar, wind, and green hydrogen projects.