Sylvie Willis
With gas prices soaring, it's important to know how to get the best value for money. One way to save money is to fill your tank at the beginning of the week, when gas prices are typically at their cheapest. It's also a good idea to fill your tank in the early morning in cold weather, as gas contracts in the cold, so you get slightly more gas in your tank. However, contrary to popular belief, the temperature of the gasoline coming out of the fuel nozzle varies very little during the day, so the time of day you pump gas may not make a difference in cost. To avoid costly repairs, it's recommended to keep your tank at least a quarter full, as a nearly empty tank can cause the fuel pump to overheat and break.
| Characteristics | Values |
|---|---|
| Time of day | Filling up the gas tank in the early morning can result in a higher MPG. However, some sources claim that the temperature variation between day and night at a gas station is negligible, and therefore, the time of day does not impact the cost. |
| Day of the week | Mondays and Tuesdays are typically the cheapest days to buy gas. |
| Fuel level | It is recommended to refuel when the gas gauge is at the one-quarter mark to prevent damage to the vehicle's fuel pump. |
| Filling the tank | Filling the tank to the top each time results in fewer trips to the gas station, reducing the overall miles driven. |
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What You'll Learn
Filling up in the morning in cold weather can get you more gas in your tank
With gas prices soaring, it's important to find ways to save money. One way to do this is by changing the time of day you fill up your tank.
In cold weather, gas contracts, roughly by around 1% per 15-degree change in temperature. Therefore, by filling up your gas tank in the early morning before the temperature of the day rises, you can get more gas in your tank, resulting in a higher MPG. While this won't provide immediate cost savings, higher MPG can save you money in the long run.
However, it's worth noting that the difference in gas volume due to temperature changes is relatively small. Gasoline is typically stored in underground tanks, where the temperature variation during the day is minimal. The fuel temperature coming out of the nozzle also varies very little between morning and afternoon fill-ups. Additionally, many gas stations temperature-correct their pumps, taking into account temperature differentials. As a result, the impact of filling up in the morning during cold weather may not be significant enough to make a noticeable difference in your fuel expenses.
Nevertheless, filling up your tank in the morning during cold weather can marginally improve your fuel efficiency. To maximize your savings, combine this strategy with other cost-cutting measures, such as avoiding letting your fuel drop too low to prevent dirt and particles from damaging your fuel pump. Additionally, filling your tank at the beginning of the week, particularly on Mondays and Tuesdays when gas prices are typically at their lowest, can also help you save money.
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Refuel when your gas gauge is at the one-quarter mark
To ensure the best fuel efficiency, it is recommended to refuel when your gas gauge is at the one-quarter mark. This practice has several benefits for your vehicle's performance and maintenance. Firstly, it helps to prevent damage to the fuel pump, which can occur if your tank consistently runs close to empty. Dirt and other particles settle at the bottom of the fuel tank, and when the tank is almost empty, these particles can enter the fuel pump and cause extensive and costly damage. By keeping your tank above the one-quarter mark, you create a buffer that prevents these contaminants from entering the fuel system.
Additionally, refuelling at the one-quarter mark ensures that your fuel pump remains adequately lubricated and cooled by the gasoline. Modern fuel pumps are designed to be cooled by the gasoline in the fuel tank, and if the tank runs too low, the pump can overheat and break. This can again lead to costly repairs. Therefore, maintaining a certain level of fuel in your tank is crucial for maintaining optimal fuel pump performance and avoiding breakdowns.
Refuelling at the one-quarter mark also helps to reduce the likelihood of fuel tank condensation, which can cause performance issues and reduce fuel efficiency. While this issue is more common in older vehicles, keeping your tank partially filled can mitigate this problem. Additionally, refuelling at this level ensures that you have enough fuel in case of emergencies or unexpected supply chain issues, providing a safety buffer.
Furthermore, from a cost perspective, it is more economical to fill your tank to the top each time you visit the gas station. While some believe that a half-full tank reduces weight and fuel consumption, the savings are insignificant. Filling your tank completely saves time and mileage by reducing the frequency of your trips to the gas station. This is especially beneficial for businesses with multiple drivers, as it leads to less time spent on refuelling and, consequently, lower overall costs.
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Filling your tank halfway costs you more in the long run
Filling your gas tank halfway may seem like a good idea to save money, but it can actually cost you more in the long run. While it is generally recommended to keep your fuel tank above the halfway mark, filling it only halfway each time can lead to several issues that may end up costing you more.
Firstly, letting your fuel tank get too low can cause damage to your vehicle. Dirt, debris, and other particles can settle at the bottom of your fuel tank, and if your tank is consistently almost empty, these particles can get into your fuel pump and cause extensive and costly damage. By always keeping your tank at least halfway full, you reduce the risk of these particles entering the fuel pump and avoid potential repairs.
Secondly, filling your tank halfway results in more frequent visits to the gas station. This means that you will be refuelling twice as often as someone who fills their tank to the brim. Over time, this can add up to significant costs, especially if you are driving long distances or if gas prices are high. Additionally, visiting the gas station more often can be time-consuming and inconvenient, especially if you have a busy schedule.
Furthermore, running your vehicle on a consistently low fuel level can impact the fuel pump's life. When the tank is close to empty, the fuel pump has to work harder, and if you only fill it halfway, this strain on the fuel pump occurs twice as often. As a result, the fuel pump's lifespan may be reduced, leading to the need for costly repairs or replacements.
While filling your tank to the brim may not be feasible for larger vehicles due to weight and cost considerations, it is generally advisable to fill your tank as full as possible. By doing so, you can avoid the potential issues and costs associated with regularly running your vehicle on a half-full tank. Additionally, it is recommended to fill your tank at the beginning of the week, as gas prices tend to be lower on Mondays and Tuesdays.
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Gas prices are usually cheapest on Mondays and Tuesdays
With gas prices soaring due to inflation, finding ways to save money on gas is more important than ever. One way to do this is to be mindful of the time you fill up your gas tank.
Generally, gas prices are lowest at the beginning of the week, with Mondays and Tuesdays being the cheapest days to fill up. According to research by GasBuddy, a fuel-savings app that tracks real-time data from over 150,000 gas stations in the United States, Mondays offer the lowest average gas price in most states. This is because gas stations are generally quieter at the start of the week, and prices tend to rise as the week goes on, culminating in the highest price during the weekend. Therefore, filling up at the beginning of the week can help you save money on gas.
However, it's important to note that there are exceptions to this trend. For example, Tuesday is the best day to fill up in 19 states, while Sunday is the cheapest day in Utah and Wednesday is the cheapest day in Hawaii. Additionally, while Fridays are generally more expensive, they are still more favorable than Thursdays, which are the most expensive day on average.
While the day of the week you fill up can impact the price you pay for gas, it's worth noting that the time of day can also make a difference. In cold weather, filling up in the early morning before the temperature rises can result in slightly more gas in your tank due to the slight contraction of gas in colder temperatures. This can lead to a higher MPG, saving you money in the long run. However, in warm weather, the temperature of the gasoline coming out of the fuel nozzle varies little throughout the day, so the time of day may not have a significant impact.
Lastly, it's important to avoid letting your fuel tank get too low. Allowing your tank to reach close to empty can release sediment and debris into the fuel pump, causing expensive repairs. As a general rule, it's best to keep your fuel above 1/4 tank to avoid any potential damage to your vehicle.
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Don't let your tank run on fumes to avoid costly repairs
Allowing your car to run on low fuel can lead to costly repairs. Fuel helps to cool the fuel pump and acts as a lubricant, so running on low fuel can cause the pump to overheat and fail. This can be a costly repair, often costing upwards of $1000. In addition, sediments in your fuel tank can be harmless when there is enough fuel in the tank. However, when the tank is low, these sediments can be released and cause issues with fuel lines and engines. This can also result in the need for costly repairs.
Another issue that can arise from running a car on low fuel is a clogged fuel filter. Over time, contaminants that settle at the bottom of the fuel tank can turn into sludge. When there is a low amount of fuel, the fuel pump can suck up this sludge, causing the fuel filter to become clogged. A clogged fuel filter will struggle to maintain the engine's power and may cause engine misfires and stalling.
Furthermore, running on low fuel can shorten the lifespan of a car. This is because rust will form in the fuel tank if it always contains a low volume of fuel. Regularly driving with a low fuel level can also lead to a weak fuel pump, which can cause the engine to run hot for extended periods. This can have far-reaching consequences, such as broken or deteriorated hoses and warped cylinders, which may require a complete engine replacement.
To avoid these costly repairs, it is recommended to maintain a fuel level above 1/4 of a tank. By refuelling before the tank gets too low, you can prevent the issues mentioned above and ensure the optimal performance of your vehicle.
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Frequently asked questions
Generally, it is best to fill your tank at the beginning of the week, preferably on Mondays and Tuesdays, as gas prices are typically at their cheapest. Filling your tank to the top each time is also more economical than filling it halfway through.
Yes, filling your tank in the early morning can get you slightly more gas due to the temperature being lower, resulting in a higher MPG. However, the temperature variation between day and night at a gas station is negligible.
It is recommended that you refill your tank when it reaches the one-quarter mark. Allowing your tank to get too low can cause your fuel pump to break, leading to costly repairs.
