How To Make E85 Fuel

Are you tired of relying on gas stations for your fuel needs? Do you want to take control and create your own fuel? Then learning how to make e85 fuel is a perfect solution for you.

E85 fuel is a mixture of ethanol and gasoline, with ethanol making up 51-83% of the mixture. Making your own e85 fuel can save you money and give you the satisfaction of being self-sufficient.

To make e85 fuel, you will need to gather the necessary materials, calculate the proper ratio, mix the ingredients, test your fuel, and store and use it properly. It may sound daunting, but with the right tools and knowledge, you can create a quality e85 fuel that is just as effective as store-bought fuel.

In this article, we will guide you through the process of making e85 fuel step by step, giving you the control to fuel your own vehicle on your own terms.

Gather the Necessary Materials

You’re gonna need to grab a few materials if you want to make some e85 fuel. Firstly, you need to source sugar, which can come from a variety of sources such as sugarcane, corn, or beets.

Yeast is also required to help ferment the sugar, and water is a crucial ingredient to create the right balance. Finally, you’ll need a distillation unit to separate the ethanol from the rest of the mixture.

When gathering materials, it’s important to take safety precautions. Sugar and yeast can be found at your local grocery store or online, but be sure to handle them with care as they can be hazardous if ingested or inhaled.

When working with a distillation unit, be sure to wear protective gear such as gloves and goggles to prevent any accidents. Always follow safety guidelines and instructions to ensure a safe and successful process.

Calculate the Proper Ratio

To calculate the proper ratio for E85, simply mix ethanol and gasoline in the correct proportions. The ideal ratio for E85 is 85% ethanol and 15% gasoline, hence the name E85.

This means that for every gallon of gasoline, you’ll need to add roughly 5 gallons of ethanol to achieve the desired ratio. It’s important to keep in mind the conversion factors when calculating the correct ratio for your E85 fuel.

Ethanol has a lower energy content than gasoline, meaning that it takes more ethanol to achieve the same level of energy output as gasoline. This is why the ratio for E85 is 85% ethanol and 15% gasoline, as it balances the energy output of the two fuels.

By using the correct ratio and understanding the conversion factors, you can create an effective and efficient alternate fuel for your vehicle.

Mix the Ingredients

Now that we’ve calculated the proper ratio for E85, let’s mix the ethanol and gasoline in the correct proportions. It’s important to use the right mixing techniques to ensure that the fuel is consistent and safe to use.

One way to mix E85 is to use a blending pump that’s designed specifically for this purpose. This pump measures the amount of gasoline and ethanol needed, and blends them together in a precise ratio.

If you don’t have access to a blending pump, you can still mix E85 manually. To do this, you’ll need to measure out the correct amount of gasoline and ethanol and mix them together thoroughly. It’s important to use the correct safety precautions when mixing E85. This fuel is highly flammable, so you shouldn’t mix it near an open flame or in a confined space. Additionally, you should wear protective gloves and eyewear to prevent any accidental spills or splashes.

By following these safety precautions and mixing techniques, you can create your own E85 fuel that’s safe and effective to use in your vehicle.

Test Your E85 Fuel

To ensure that your E85 fuel is of high quality, you need to test it using a fuel hydrometer. This device measures the density of the fuel to determine its ethanol content and ensure that it meets the E85 standard.

Additionally, you should also check for impurities such as water and sediment which can negatively impact the performance of your engine. By regularly testing your E85 fuel, you can ensure that your engine is running smoothly and efficiently.

Using a Fuel Hydrometer

Simply insert the fuel hydrometer into the E85 fuel and watch as the liquid rises to reveal the ethanol percentage, allowing you to adjust the fuel mixture for optimal performance in your vehicle.

Hydrometer accuracy is crucial for this process, as a small error in measurement can result in significant differences in performance. It’s important to note that alternative fuel sources may have varying ethanol content, so using a fuel hydrometer is essential to ensure the correct mixture.

To use a fuel hydrometer, first, ensure that it’s clean and dry. Then, insert it into the E85 fuel and wait for the liquid to settle around the hydrometer’s float. The ethanol percentage will be indicated by the point where the float rests on the scale. Depending on the results, you can adjust the fuel mixture to achieve optimal performance.

By using a fuel hydrometer, you can have more control over the fuel mixture in your vehicle, resulting in better performance and fuel efficiency.

Checking for Impurities

Checking for impurities in your fuel is crucial for ensuring the longevity and reliability of your vehicle, so don’t skip this important step! Common impurities found in e85 fuel include water, sediment, and other contaminants that can cause serious damage to your engine.

These impurities can cause corrosion, clog fuel injectors, and even lead to engine failure. To check for impurities, start by visually inspecting the fuel. If the fuel appears cloudy or has visible debris, it’s likely contaminated. Additionally, you can use a fuel filter to catch any sediment or debris that may be present.

Safety precautions should always be taken when handling fuel, such as wearing protective gloves and avoiding smoking or other sources of ignition. By taking the time to check for impurities, you can ensure that your e85 fuel is clean and safe to use, and avoid costly repairs down the road.

Store and Use Your E85 Fuel

To ensure optimal performance and efficiency from your E85 fuel, it’s crucial to properly store it using appropriate techniques.

When filling your vehicle, it’s important to monitor the fuel level and ensure it doesn’t drop below a safe level to avoid damage to the fuel system.

You should also keep an eye on the performance and efficiency of your vehicle. Note any changes and address them promptly to maintain peak performance.

Proper Storage Techniques

When storing your homemade e85 fuel, make sure to seal the container tightly to prevent any air or moisture from entering. Air and moisture can oxidize the fuel, causing it to break down and degrade over time. This can lead to decreased fuel efficiency and may even cause damage to your engine.

To prevent this, consider using airtight containers made of materials such as polyethylene or stainless steel. Long term preservation is key when it comes to storing your e85 fuel.

It’s best to store the fuel in a cool, dry place away from direct sunlight and heat sources. This will help to maintain the quality of the fuel and minimize the environmental impact of any spills or leaks.

By following these proper storage techniques, you can ensure that your homemade e85 fuel will be ready when you need it, without any negative impact on the environment.

Filling Your Vehicle

Before you fill up your vehicle with your homemade e85, it’s important to know the proper techniques to ensure optimal performance. Firstly, make sure to only fill up at fueling stations that offer e85 fuel. Not all gas stations carry this type of fuel, so it’s important to research beforehand or use a fuel locator app to find the nearest station.

Additionally, it’s important to check the compatibility of your vehicle with e85 fuel. Some vehicles may require modifications in order to run on this type of fuel.

When filling up your vehicle with e85, it’s crucial to take safety precautions. Always turn off your engine before fueling up and avoid smoking or using any open flames near the fueling area. Make sure to properly secure the fuel cap after filling up to prevent any leaks or spills.

It’s also important to avoid overfilling your tank, as this can cause the fuel to expand and potentially leak out of the tank. By following these safety measures and filling up at proper fueling stations, you can ensure a safe and efficient driving experience with your homemade e85 fuel.

Monitoring Performance and Efficiency

Monitoring the performance and efficiency of your vehicle running on homemade e85 is crucial to maximizing its potential. To achieve optimal performance, you need to track your vehicle’s fuel economy, power output, and overall efficiency.

This way, you can identify areas where you may need to make improvements to your fuel mixture or engine tuning. Efficiency improvements can be made by adjusting the air-to-fuel ratio, ensuring proper ignition timing, and maintaining a clean air filter.

Performance testing can be done by using a dynamometer, which measures torque and horsepower, or by using a GPS-based performance meter, which measures acceleration and top speed. By monitoring your vehicle’s performance and efficiency, you can make adjustments to your homemade e85 fuel blend, engine tuning, and driving habits to achieve the best possible performance and fuel economy.


Congratulations, you’ve successfully made your own E85 fuel! By following the steps outlined in this article, you’ve learned how to gather the necessary materials, calculate the proper ratio, mix the ingredients, test your E85 fuel, and store and use it safely.

Remember that ethanol is a highly flammable substance, so it’s important to follow safety precautions when handling it. Always wear protective gear and keep a fire extinguisher nearby.

Additionally, be sure to properly label your E85 fuel and store it in a cool, dry place away from any heat sources or open flames.

As you continue to experiment with making your own fuel, keep in mind that the exact ratio of ethanol to gasoline may vary depending on the equipment being used and the desired performance of your vehicle. It’s important to do your research and consult with experts to ensure that you’re making the best fuel for your specific needs.

With some practice and patience, you can become an expert in making E85 fuel and enjoy the many benefits of using biofuels.