# How Much Does 5 Gallons Of Gas Weigh – It’s More Than You Think!

Are you trying to get a supply of gas for your long trip and you want to learn how much does 5 gallons of gas weigh? If that is the case, then you are at the right place because there will be a lot to cover on this topic.

Planning your trip ahead of time will give you that extra edge since you will not leave anything left to chance and you will make sure that you will have the right amount of gasoline always with you. Meaning that your engine will never stop running and you will be able to reach your destination in time.

This is often the reason to know, especially if there are no gas stations around your destination or you are driving a boat. As you know, while boating you will never come across a gas station to fill your boat with fresh gasoline and you have to plan how much gasoline you need to carry for that specific trip if you don’t want to end up calling for help if you been left out without gas and your boat stops working.

So, in this case, you need to learn the weight of how much you can carry with you and we are going to help you out. First, we will start from the basics and learn the properties of gasoline. Then we will discuss why is it important to know how much does 5 gallons of gas weigh and is it dangerous to carry fuel with you and how to be safe while carrying it. Then we answer the question of how much does 5 gallons of gas weigh and some other common questions. So, follow along.

## What Is Gasoline, And How Much Does 5 Gallons Of Gas Weigh?

Gasoline as most of us know is a flammable liquid that is used to power up internal combustion engines. Gasoline is petroleum-based, which means that it is made out of crude oil and then properly refined to get the right octane rating in order to run an internal combustion engine properly.

The gasoline is ignited by the spark produced by the spark plugs. So, every time there is a bang in the cylinder, a successful ignition of this liquid occurs, and these bangs make the pistons move, and then they turn the crankshaft that delivers the power to the wheels. It’s that simple.

What is important to note is that modern gasoline can also contain some amount of ethanol (it’s thus a good idea to use an E10 checker). This ethanol is basically alcohol that is used to improve the combustion of the internal combustion engine. This gasoline mixture is also known as E85.

What is important to note about gasoline is that it is lighter than water and other liquids and gas also doesn’t like to mix with these fluids.

What is bad though is that gasoline is not that ecological. Meaning that with every gallon burnt into the atmosphere. There are about 20lbs of CO2 that is produced by the engine. Meaning that harmful particles are running inside the air and can enter our lungs and cause some damage. Not to forget that cars are also attributing to climate change. When fuel is burning two different molecules are produced and that is H2O and CO2.

But we are here to learn how much does 5 gallons of gas weigh right? Well, that’s right and we are going to discuss that in the following chapters.

## What Is Gas Octane Rating?

The octane rating is also known as the octane number. This number is the number that each gas is rated. Meaning that the gas needs to have a proper octane rating in order to be used inside internal combustion engines.

Too low an octane rating can cause some problems and make the vehicle unusable. The engine will simply not work since the octane rating is so low. And here we come to the definition of octane rating and that is that octane rating is simply the ability of the fuel to withstand compression without detonation.

So, the higher the number, the more compression can be built up before the fuel detonates. So, if you are running a higher compression engine. This aspect is key in making more power out of it. Without big compression, you will be left with poor performance. Meaning that if you run low octane fuel in your 91 octane car, the engine will start knocking because it will not like this fuel.

That’s why it is of great importance to pour the right octane rating into your fuel tank. But does this octane rating change how much does 5 gallons of gas weigh? Probably not, since gas is gas. But the octane rating is the property of the gas that resists compression. So, you don’t need to focus on this too much.

The important thing to know is how much does 5 gallons of gas weigh in terms of pounds. Since if you are loading it is quite useful to learn this fact. And that’s what we are going to cover in the following chapter where we will learn why it is important to learn how much does 5 gallons of gas weigh in the first place. So, follow along.

## Why Is It Important For You To Learn How Much Does 5 Gallons Of Gas Weigh?

Knowing how much does 5 gallons of gas weigh is of great importance. Especially if you are curious or you need to carry more fuel with you on that road trip (as you were figuring out how to calculate gas for a trip) that you were planning for months.

For example, you have a boat and you want to take your boat to some island that is located far from your position. In this case, you will need to plan your fuel in advance because you don’t want to get stuck in the middle of the ocean. As you know, there are no gas stations in the ocean. So, the only way around this would be a cry for help on the radio and hope that someone will pick up your signal and save you.

Also, it is worth noting that not all boats can carry a lot of weight since you could possibly ruin the performance of your boat or if there are waves, this weight can put your life in danger. So, learning how much does 5 gallons of gas weigh is key if you want to play it safe and not worry about these things.

Another situation would be if you want to plan a trip with your RV. Some locations are so remote that you will be required to carry fuel with you in most situations. Finding a gas station on a mountain top can be a rather difficult and almost impossible task to do. So, having a few gallons of extra fuel with you will be a complete lifesaver.

And here weight vs volume comes into play. As you know fluids are not measured in weight but in volume. So, you have to learn the difference between the two. And that we will discuss next.

## Weight VS Volume

Having the right information is essential because you don’t want to run your vehicle too heavy. It doesn’t matter if it’s a car or a boat. Weight matters by a significant margin. But let’s elaborate on the reasons why would someone want to learn how much does 5 gallons of gas weigh.

The most probable reason why would someone want to know this is because they are curious. As they would say, curiosity killed the cat. People want to learn new things and see how things work in real life. Although gas and water are both are fluids, their weight is not the same.

This is quite odd. But that’s how things are when it comes to fluids. They are measured quite differently. More precisely in volume. While the object is measured on the basis of its mass. A mass of a gold plate is heavier than a mass of a chocolate bar. Even they look the same. Similar is with fluids.

In a simple definition, the weight determines how heavy an object is and the volume determines how much space it takes.

Objects are usually measured in weight. While fluids like gas are measured based on the volume they take.

Let’s take another example. You fill up bottles with water, gas, sunflower oil. And you place them on a scale. Even though the bottles are of the same size and they are filled to the same level. The results on the weigh scale will show different measuring on each of them. All this is because of the different volumes they have. Simple as that.

But how much does 5 gallons of gas weigh? More on that in a bit where we will cover that in great detail.

## How Much Does 5 Gallon Of Gas Weigh?

Now we came to the important bit and the question of how much does 5 gallons of gas weigh. So how much does 5 gallons of gas weigh in reality? Let’s elaborate.

A gallon of gas weighs about 6.3 lbs. So when you know how much a gallon weighs it is easy math to learn how much does 5 gallons of gas weigh?

And the answer to that question is 31.5 lbs. This is a precise calculation and should always be correct.

So, you can plan in advance how much fuel you can carry with you at all times. This will be quite handy if you are limited by the weight of how much you can carry.

Let’s say that you drive a motorcycle or a boat and you need to know the exact weight that you can carry.

Similarly to race cars. As you know in many competitions, race cars are pretty much limited by their weight. So, you cannot go overboard with weight because you are going to fail the weight measurement.

It is also worth noting that vehicles are usually measured by their curb weight. This weight also includes a full tank of gas that you can carry with you.

Overall, that’s it when it comes to knowing how much does 5 gallons of gas weigh. But have you known that UK imperial measurements are not the same as the US measurements? This is quite odd, and in the following chapter, we are going to learn why is this the case when it comes to measuring fluids in the US and in the UK.

## Is It The Same With UK Imperial And US Gasoline?

No, it is not. In the UK the measurements are taken differently since in the UK they are using the Imperial system. What is different thing is that they measure things differently.

For example, in the Imperial gallon it is measured only the volume of the liquid and this by definition is about 4.54609 cubic decimeters. In each gallon, there are four quarts as well as a pint which has 1/8 of a gallon. And in each pint, there are 20 imperial ounces. All this can be really exhausting to learn and understand.

What is worth knowing is that the Imperial gallon is quite heavier than the US gallon. More exactly one pound more. So, a UK gallon of gasoline would weigh about 7.3 lbs. While the US gallon of gas is 6.3 lbs heavy.

This is a big difference if you are performing some research or some other important measuring. Because if you are in the US and you use UK gallons instead of US gallons, your measurements would be off by a significant amount since these measuring units sound the same. They are nothing alike since the way of how you get these numbers is completely different. So, be aware of this.

But how much does 5 gallons of gas weigh in Imperial gallons? The answer to this question is 36.5 lbs. Meaning that 5 gallons of gas are about 5 lbs heavier in the UK than in the US. So, even though the gas price is cheaper in the US, you lose when it comes to the measuring of the gasoline. But still, the gas is cheaper in the US than elsewhere, like in Europe for example.

## How Much Does Diesel Fuel Weigh Is It The Same As Gasoline?

We learned how much does 5 gallons of gas weigh. Now let’s discuss some different topics. If you are a truck owner you probably have asked yourself this question quite often. And that is if diesel fuel and gasoline are weighing the same? What do you think, is it the same or not? Let’s see.

The answer to this question is that diesel fuel is heavier than gasoline. But why is this the case? Well, this is the case because diesel fuel is denser than gasoline. Meaning that there are a ton of more molecules in a smaller amount of space. Unlike gasoline which is quite thinner in its consistency.

So, how much does a gallon of diesel weigh? A gallon of diesel weighs about 6.95 lbs. Meaning that it is 0.65 lbs heavier than gasoline. So if you multiply this times five, you get the number of 34.75 for five gallons of diesel. Which is about 3 lbs heavier than 5 gallons of gasoline.

The Imperial measurement will also differentiate and will make diesel even heavier. So, a gallon of diesel in the UK will be 8.338 lbs. Meaning that 5 lbs of diesel in the UK will be 41.65 lbs. Simple math.

As we concluded above, you need to understand that diesel is heavier because it is quite denser than gasoline and also the US and UK measurements are off by 1 lb approximately. So, in the UK, the weight measuring is about a pound heavier than in the US where the gallon is a pound lighter.

So, that’s about how much does 5 gallons of gas weigh and 5 gallons of diesel weigh in the US and in the UK. Now let’s discuss some other topics.

## Does Gasoline Mix With Water?

We covered how much does 5 gallons of gas weigh now let’s see if the gasoline can be mixed with water. And the short answer to this question is, no.

Water and gasoline do not mix together. The gasoline is lighter than the water and will probably float if you pour some water in a jug of gasoline. Even though in cases when there is water in the gas tank, there could be some water that will be sucked in along the gasoline and this could possibly harm your fuel system.

So, if you are experiencing some symptoms like hesitating, and problems with stalling then you might want to check if maybe you have water in the fuel tank.

## Why You Should Not Drive With An Empty Fuel Tank

This is something that is really important for you as a car owner to know. Besides how much does 5 gallons of gas weigh? And that is why you shouldn’t drive with an empty tank.

The primary reason why you shouldn’t do this is that you might end up being stranded by the side of the road. Always have gasoline inside of your fuel tank, at least to get you to the nearest gas station.

If you think that you can’t reach the gas station with the fuel you have, it is useful to have a big jug of gasoline in your trunk. 5 gallons of gas would probably be enough to get you where you plan on going and make you sure that your car will not be left out without gas.

Another reason why you should never leave your car dry of gasoline is the probability of damage. Because as you know the car needs gasoline to run. So, if it’s left bone dry, the fuel pump will suck air and your fuel lines will end up filled with air. This might cause the car to be hard to start after you fill it up.

It might require a big effort in starting the car. Unlike normal. So, it is not advised to run the car on reserve because of this.

## Why Is It Dangerous To Carry Fuel With You?

We learned how much does 5 gallons of gas weigh. Now let’s see why is it dangerous to carry a lot of fuel with you while you are driving a vehicle.

And the answer is that yes, it is quite dangerous to drive with a lot of fuel inside of your vehicle. Especially if you carry this fuel in the front.

Whenever you are carrying fuel inside of your vehicle, you should at least make sure that the fuel is in the rear trunk area. Don’t put the fuel in the cabin or right next to you.

Imagine that you have a crash and fuel starts leaking around you, the chances for an explosion are almost 100%. So, if you want to save your life and make sure that you don’t end up hurt. Make sure that you don’t put jugs of gas inside of the cabin.

And even in the rear, it is somewhat dangerous and a potential hazard. Because as you know, the fuel tank is well secured and designed to prevent a possible fire. Unlike the plastic jugs which are rather thin and can explode if they are hit with high speed. This high-speed impact can be devastating and start a fire in the rear if you get rear-ended.

So, always make sure that you carry gas in the rear and only in situations when it is necessary to do so. If not avoid carrying gasoline with you. Especially 5-gallon jugs.

## Conclusion To How Much Does 5 Gallons Of Gas Weigh

In this article, we have covered quite a lot when it comes to how much does 5 gallons of gas weigh. First, we learned more about gasoline and octane rating. As we concluded this octane rating is the resistance of the gasoline against compression. The higher the rating the more energy can be produced from the gasoline.

Then we covered learned more about weight vs volume and learned why fluid is not measured in weight. Then we covered how much does 5 gallons of gas weigh in US gallons as well as in UK gallons. We also did this comparison with diesel fuel.

Lastly, we covered some common questions of whether gas and water can be mixed or not and also how to transport fuel safely in your vehicle without risking fire damage.