How Much Does A Gallon Of E85 Weigh

Do you ever wonder how much a gallon of E85 fuel weighs? As a driver, it’s important to have a basic understanding of the properties and composition of the fuel you use in your vehicle. E85 is a popular fuel blend that contains up to 85% ethanol and 15% gasoline, making it a renewable and environmentally-friendly option. But how does this affect its weight?

To answer this question, we must first delve into the specific gravity of E85 and its role in determining weight. Specific gravity is the ratio of the density of a substance to the density of a reference substance, usually water.

In the case of E85, its specific gravity is less than that of gasoline, which means that it is lighter and less dense. This has important implications for drivers, as it affects the energy content and efficiency of the fuel, as well as the overall weight of their vehicle.

In this article, we will explore the weight of a gallon of E85 in detail, as well as the environmental benefits of using this fuel blend.

Understanding E85 Fuel Blend

You’ll be amazed at the power and efficiency of E85 fuel blend! E85 is a fuel blend made up of 85% ethanol and 15% gasoline.

Ethanol production has increased in recent years, and it’s a renewable resource made from corn, sugarcane, and other crops. This makes E85 an eco-friendly and sustainable fuel option.

E85 fuel blend has a higher octane rating than regular gasoline, which means it has a higher resistance to knock or detonation. This leads to better fuel efficiency and more power in vehicles that can handle the higher ethanol content.

Additionally, because ethanol has a lower carbon content than gasoline, it burns cleaner and produces fewer emissions. So not only is E85 a powerful and efficient fuel blend, it’s also a greener option for the environment!

Specific Gravity and Its Role in Determining Weight

When using specific gravity calculation to determine the weight of a gallon of E85, you’ll need to measure its density compared to the density of water. Specific gravity is the ratio of the density of a substance to the density of a reference substance, which in this case is water.

For E85, the specific gravity varies depending on the exact blend of ethanol and gasoline, but it typically falls between 0.73 to 0.79. This means that E85 is less dense than water, which has a specific gravity of 1.00.

To calculate the weight of a gallon of E85, you need to know its density in pounds per gallon (lbs/gal). To do this, you can use the formula: (specific gravity of E85 x density of water at 60°F x 8.34 lbs/gal).

For example, if the specific gravity of E85 is 0.75, the density of water at 60°F is 8.33 lbs/gal, then the weight of a gallon of E85 would be (0.75 x 8.33 x 8.34) = 50.00 lbs/gal.

Keep in mind that the specific gravity and density may vary slightly depending on temperature and pressure, so it’s important to use accurate measurements. By understanding the specific gravity calculation and density variation of E85, you can have greater control over the amount of fuel you’re using and its weight.

Weight of a Gallon of E85

Knowing the weight of a gallon of E85 is crucial for any driver who wants to optimize their vehicle’s fuel efficiency. E85 is a blend of gasoline and ethanol, and its weight can vary depending on the proportion of each component.

To determine the weight of a gallon of E85, you need to know its density, which is the mass per unit volume. The density of E85 can be calculated by taking the density of gasoline (0.72 g/mL) and ethanol (0.79 g/mL) and finding the weighted average based on their proportion in the blend.

For example, if E85 is 70% ethanol and 30% gasoline, the density would be (0.70 x 0.79) + (0.30 x 0.72) = 0.765 g/mL. Therefore, a gallon of E85 would weigh approximately 6.4 lbs (2.9 kg).

By knowing the weight of E85, you can make a fuel economy comparison with other fuels and determine the optimal blend for your vehicle.

Implications for Drivers

As a driver, it’s important to consider the implications of the weight and density of E85 when making fuel choices for your vehicle. One of the major implications is fuel efficiency. Due to the lower energy content of E85 compared to gasoline, you may need to refuel more frequently to maintain the same driving distance. This means that you may end up spending more money on fuel if you choose E85 over gasoline.

However, the cost comparison between the two fuels also depends on the price per gallon of each fuel type. In some cases, E85 may be cheaper than gasoline, which can offset the lower fuel efficiency.

Another implication of the weight and density of E85 is the impact on your vehicle’s performance. Because E85 has a lower energy content, it may not provide the same level of power as gasoline. This can result in slower acceleration and reduced towing capacity. It’s important to check your vehicle’s owner’s manual to see if it is compatible with E85 and to understand any potential impacts on performance.

Overall, while E85 may be a cost-effective and environmentally-friendly fuel choice for some drivers, it’s important to weigh the implications of its weight and density on fuel efficiency and vehicle performance before making a decision.

Environmental Benefits

You’ll be interested to know that e85 has significant environmental benefits.

Firstly, it reduces greenhouse gas emissions by up to 29% compared to gasoline, due to the fact that it’s made from renewable sources such as corn and sugarcane.

Secondly, it’s a renewable fuel source, which means that it’s sustainable and can be replenished.

Finally, government incentives and mandates provide additional benefits for using e85, such as tax credits and grants for the production and use of renewable fuels.

These factors make e85 an attractive option for those who’re concerned about the environment and want to make a positive impact.

Reduced greenhouse gas emissions

Reducing greenhouse gas emissions is an important factor to consider when deciding to use E85 fuel, which weighs approximately 6.59 pounds per gallon. E85 is a blend of 85% ethanol and 15% gasoline, making it a more sustainable fuel option compared to traditional gasoline.

This blend contains a higher percentage of ethanol, which is derived from renewable sources such as sugarcane, corn, and other grains. By using E85, you can reduce your carbon footprint and contribute to sustainability practices.

When compared to gasoline, E85 emits less carbon dioxide, hydrocarbons, and nitrogen oxide. This is because the ethanol in E85 is derived from renewable sources and has a lower carbon content than gasoline. Additionally, ethanol has a higher oxygen content, which helps in reducing harmful emissions.

The use of E85 also helps in reducing our dependence on fossil fuels, which are a finite resource and contribute to environmental degradation. Therefore, by choosing E85, you can make a positive impact on the environment and contribute towards a sustainable future.

Renewable fuel source

Now that we’ve discussed the reduced greenhouse gas emissions of E85, let’s dive deeper into what makes it a renewable fuel source.

E85 is produced using a combination of gasoline and ethanol, which is made from renewable resources such as corn or sugarcane. This means that E85 can be produced sustainably, without relying on finite resources like oil.

Production methods for E85 vary, but generally involve blending gasoline and ethanol in specific ratios to achieve the desired ethanol content. Ethanol content can range from 51% to 83%, with the remaining percentage being gasoline. The higher the ethanol content, the lower the carbon emissions of the fuel.

In addition, E85 has a lower energy density than gasoline, meaning it weighs less per gallon. On average, a gallon of E85 weighs approximately 6.59 pounds, compared to 6.15 pounds for a gallon of gasoline.

With its renewable production methods and lower carbon emissions, E85 offers a promising future for sustainable fuel sources.

Government incentives and mandates

Government incentives and mandates are playing a crucial role in increasing the use of E85 as a sustainable fuel source. Incentive programs such as the Renewable Fuel Standard (RFS) require a certain amount of renewable fuel to be blended into gasoline each year, including a minimum amount of ethanol, which can be made from corn or other feedstocks.

Various state-level programs offer tax credits or other incentives to encourage the use of E85 and other biofuels.

Policy changes have also contributed to the growth of E85. For example, some states have implemented Low Carbon Fuel Standards (LCFS) that require fuel providers to reduce the carbon intensity of their fuels over time. Since E85 has a lower carbon intensity than gasoline, it can help fuel providers meet these standards.

Furthermore, the federal government offers a tax credit to fuel providers who blend E85, which helps offset the higher cost of producing the fuel. All of these incentives and mandates are helping to make E85 a more viable and attractive option for consumers and fuel providers alike.


Congratulations! You now know how much a gallon of E85 weighs. By understanding the specific gravity of E85, we can determine that a gallon of E85 weighs approximately 6.5 pounds.

This information is crucial for drivers who need to know the weight of their fuel for various reasons, such as calculating fuel economy or payload capacity.

E85, with its high ethanol content, has numerous environmental benefits that make it a popular choice among drivers. Not only does it reduce greenhouse gas emissions, but it also supports domestic agriculture and reduces dependence on foreign oil.

As more drivers become aware of these benefits, we can expect to see an increase in demand for E85 and other alternative fuels.