How Much Gas Should Really Be in Your Tank—Here’s the Answer

Nothing is more annoying when you're cruising on a road trip or commuting to work and realize something urgent: you need gas. Between the time it takes to fill up, the cost of the gas, and just the general inconvenience, you might be wondering whether you can just cruise a little bit longer without stopping. Maybe not so much, according to experts who say there's actually an ideal amount of gas to keep in your tank, which is one of many ways you can help extend the life of your vehicle.

To begin with, it's crucial to comprehend how your gas tank Works. There's a fuel pump in your gas tank, explains Bill Evans, who has more than three decades of experience working with vehicles and currently serves as the manager. J & E Auto Body In Clark, New Jersey, this particular pump operates between the gas tank and the engine, delivering fuel. While the pump functions, it generates heat; however, being immersed in gasoline allows the fuel to act as a coolant, preventing the pump from getting too hot. Running with less than a quarter of a tank of gas may lead to the pump overheating and malfunctioning prematurely. Additionally, operating continuously on an almost-empty tank could result in moisture accumulation within the gas tank’s walls, leading to diluted fuel and potential corrosion, explains Richard Reina, who serves as the product training director. CARiD.com.

You may still feel driving on empty gives you more fuel for your buck. But, in addition to increasing the potential of longterm damage to your car, driving on empty actually hurts your gas mileage. " If you're driving around on empty, the fuel pump is going to start picking up everything on the bottom of the tank," Evans says. This includes sediment from dirty gas and tank condensation. Not only can this damage your fuel pump and motor, but it actually makes your gas mileage worse. " As long as you maintain at least a quarter tank of gasoline, your fuel efficiency will remain as good as possible," Evans stated. "Since the filter doesn’t heat up, the engine doesn’t work too hard. This contributes positively to your miles per gallon. If you maintain at least a quarter tank of gasoline in your vehicle, you will extend the lifespan of the fuel system components.

So there you have it—maybe it's time to break your habit of using the last drops of the final gallon of fuel to roll to the gas station. And while you're at it, focus on breaking these other habits that are shortening the life of your car.

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