How Much Diesel Weigh?

Fuel is the lubricant that keeps trucks on the road. If you want to haul profitable goods and keep your trucking firm afloat, you’ll need diesel fuel to get from point A to point B.

Although it’s a simple calculation, have you ever considered the intricacies of diesel fuel? Have you considered how much diesel fuel weighs? What’s the weight of a full tank of diesel fuel? Is there a difference in the weight of diesel based on the outside temperature? How does the weight of diesel fuel affect the weight of your truck, especially when it’s time to weigh it?

What is the weight of diesel fuel?

A gallon of diesel is approximately 7 pounds in weight. In the United States, diesel weighs somewhat less than 7 pounds per gallon (and slightly more than 7 pounds per gallon in Canada), but we’ll use 7 pounds per gallon to keep things simple.

What is the fuel weight of a full tank?

Semi-truck fuel tanks are available in a variety of sizes, but they typically store 125 to 300 gallons of petroleum. Each side of the tractor has a gasoline tank, with fuel apportioned between the two tanks to balance the truck’s total weight. Because diesel fuel weighs around 7 pounds per gallon, a full tank of diesel might weigh anywhere between 875 and 2,100 pounds.

Does the weight of diesel fuel change when it’s colder vs. warmer?

Yes, but it’s a teeny-tiny fraction of a percent. Take a look at this handy calculator. Let’s say the temperature is 16 degrees Fahrenheit and a gallon of diesel weighs 7.1 pounds. When the temperature is 106 degrees Fahrenheit, a gallon of diesel fuel weighs 6.8 pounds. Now set the temperature to 69 degrees Fahrenheit, which is a very pleasant temperature. The weight of a gallon of diesel fuel is 6.9 pounds. See? All of the differences are minor. Consider the following scenario: Depending on the size of the fuel tank, the temperature weight differential of diesel fuel will never be more than 10-50 pounds.

What does 1 Litre of fuel weigh?

When one litre of petrol is burned, it creates approximately 2.31 kg of carbon dioxide. A litre of fuel, which weighs roughly 840g, emits considerably more carbon dioxide – 2.68kg. CO2 is a strong greenhouse gas that is produced during the combustion process in your engine.

Your fuel economy is linked to the quantity of CO2 you emit when driving. The more fuel you consume per km, the more carbon dioxide you produce per kilometre, and car manufacturers frequently provide this statistic. For example, a Ford Ranger with a combined fuel economy of 8.3-8.8 litres per 100km produces between 218 and 230g/km.

We must look at the chemistry to understand why the total carbon dioxide created is heavier than the starting litre of fuel: Although diesel and gasoline are high in carbon, carbon is rather light. When the fuel is burned, the carbon joins with two oxygen molecules (both heavier than the carbon) to form carbon dioxide. Each oxygen molecule is approximately 25% heavier than a carbon molecule, and there are two of them!

To put it in numerical terms, one molecule of carbon weighs 12 grams, but two molecules of oxygen weigh 32 grams!

But what percentage of diesel and gasoline is carbon? About 720g of the 840g that one litre of fuel weighs is carbon. Around 640g of the 740g that one litre of petrol weighs is carbon.

Does diesel weigh more than gas?

We’ve also witnessed the opposite: one of our clients put gasoline directly into one of his tractor’s diesel fuel tanks by accident. He wanted to know whether there would be any issues.

If you work in the fuel industry long enough, you’ll come across a situation like this at some point. Mixing gasoline with diesel is never a good idea, but it isn’t always a disaster. The most important factor is how much of each you unintentionally added. If that happens to you, here’s what you may expect.

Big Differences between gasoline and diesel fuel

When we talk about diesel fuel, we’re talking about #2 diesel fuel, whether it’s for on-road or off-road use.

When attempting to foresee what problems might occur if one fuel is mistakenly mixed with the other, you must consider the most significant distinctions between the two fuels.

Because diesel fuel is made up of big molecules, it is heavier than gasoline. Because of the difference in density and viscosity, it atomizes differently. It also has a much greater flash point and autoignition temperature. And, given these, the inverse can be applied as well. Gasoline is lighter than diesel and flashes at a lower temperature.

When you bring in fuel that isn’t supposed to be there, these variations in physical qualities cause difficulties in engines and fuel systems.