As the seasons change, many homeowners begin to tackle their spring cleaning checklist, and pressure washing often tops that list. However, when it comes to selecting the right fuel for your pressure washer, the options can be overwhelming. Are you unsure about which fuel to use for your pressure washer? You’re not alone.
The type of fuel to use in a pressure washer depends on whether it is powered by gasoline or diesel. It’s crucial to follow the manufacturer’s guidelines to ensure optimal performance and avoid damage to the machine.
In this blog, we will explore the different fuel options available for pressure washers and help you make an informed decision.
Types of Pressure Washers

Below is a closer look at the different types of pressure washers and the fuels they use. By understanding the various options available, you can make an informed decision about which type of pressure washer and fuel is best for your needs. Let’s start by exploring the different types of pressure washers available on the market.
Electric pressure washers
Electric pressure washers are a type of pressure washer that runs on electricity instead of gasoline or diesel fuel. They are typically quieter and easier to maintain than their gas-powered counterparts, making them a popular choice for homeowners and those who need a pressure washer for light-duty tasks.
Electric pressure washers are available in a range of sizes and power levels, from small handheld models to larger units with more powerful motors. They are also typically more affordable than gas-powered pressure washers, making them a great choice for those on a budget.
One thing to keep in mind when using an electric pressure washer is that they require a power source, which can limit their mobility. They may not be as powerful as gas-powered pressure washers, which can make them less effective for certain cleaning tasks.
Overall, electric pressure washers are a great choice for those who need a pressure washer for light-duty tasks around the home and want a more affordable and easy-to-maintain option.
Gas pressure washers
Gas pressure washers are powered by gasoline and are known for their high cleaning power, making them ideal for heavy-duty cleaning tasks. They are typically more powerful than electric pressure washers, which means they can clean larger areas and tougher stains.
However, gas pressure washers also have some drawbacks. They tend to be louder and heavier than electric pressure washers, and they require more maintenance, including regular oil changes and spark plug replacements. They emit exhaust fumes, which means they should not be used indoors or in enclosed spaces.
Despite these drawbacks, gas pressure washers remain a popular choice for those who need powerful cleaning capabilities for larger or tougher cleaning tasks, such as cleaning large decks or removing oil stains from driveways. They are also ideal for outdoor cleaning tasks where an electrical outlet may not be available.
Fuel Options for Pressure Washers

Deciding which fuel to use can impact the efficiency and longevity of your pressure washer, as well as the environment around you. Following are the different fuel options available for pressure washers and discuss the pros and cons of each. Whether you’re a seasoned pressure washer user or just starting out, this guide will help you make an informed decision on what fuel to use in your pressure washer.
Gasoline
Gasoline is a commonly used fuel option for pressure washers, but use the correct type of gasoline for your machine. Always refer to the manufacturer’s instructions to determine the recommended gasoline type and octane rating.
Using a gasoline with a lower octane rating than recommended can cause engine knocking and damage to the machine. Store gasoline properly and to not use gasoline that’s been sitting for too long, as it can degrade and harm your pressure washer’s engine.
Diesel
Diesel fuel can be used in pressure washers that are designed for diesel engines. It is typically used in larger commercial or industrial pressure washers. Diesel fuel is more efficient and has more energy per gallon than gasoline, which can make it a cost-effective option for high-volume cleaning tasks.
However, ensure that the pressure washer is designed to run on diesel fuel, as using the wrong type of fuel can damage the engine. Follow proper safety precautions when handling diesel fuel, as it can be flammable and toxic.
Propane
Propane is a viable fuel option for pressure washers that offers several benefits. Propane is a cleaner-burning fuel compared to gasoline, diesel, or kerosene, making it more environmentally friendly. It produces fewer emissions, which means it reduces air pollution and is a good option for indoor use.
In addition to being eco-friendly, propane also has several practical advantages for pressure washer users. It is readily available, easy to store, and has a longer shelf life than other fuels. Propane is also less volatile than gasoline, making it safer to use and transport.
When using propane as a fuel for a pressure washer, users should make sure to use the correct regulator to control the fuel pressure. Properly store and handle propane to avoid any potential safety hazards.
Kerosene
Kerosene is a common fuel option for pressure washers due to its affordability and high energy content. It is a type of diesel fuel that is less refined, making it a bit cheaper than regular diesel. However, note that kerosene can only be used in pressure washers specifically designed for this fuel type.
Using kerosene in a pressure washer can provide efficient cleaning power, especially for tough grime and stains. It is also less likely to cause carbon buildup in the engine, which can prolong the lifespan of the machine.
However, kerosene can be more difficult to find compared to gasoline or diesel, and it may produce a strong odor and more fumes during use.
When using kerosene in a pressure washer, follow safety precautions such as wearing protective gear and avoiding spills. The user should always refer to the manufacturer’s instructions and recommendations for fuel usage to ensure proper functioning and avoid any damage to the machine.
Considerations for Choosing the Right Fuel

With various fuel options available in the market, it’s crucial to understand the advantages and disadvantages of each fuel type before making a decision. Following are the key considerations to keep in mind when selecting the fuel for your pressure washer, so you can make an informed decision and keep your equipment running smoothly.
Manufacturer’s recommendation
When it comes to choosing the right fuel for your pressure washer, consider the manufacturer’s recommendation. They often provide specific instructions for which types of fuel are compatible with their machines and which ones should be avoided.
Following these recommendations can help you avoid damaging your pressure washer and ensure optimal performance. Note that using the wrong fuel can void your warranty, so it’s always best to stick with the manufacturer’s guidelines.
Power output requirements
When selecting a fuel for your pressure washer, it’s essential to consider the power output requirements. The power output of a pressure washer is measured in PSI (pounds per square inch) and GPM (gallons per minute).
Gasoline-powered pressure washers generally produce higher pressure output than electric models, making them better suited for heavy-duty tasks. If you need a pressure washer for commercial or industrial use, a gasoline-powered model is likely the best option.
However, for small-scale tasks like cleaning your car or patio furniture, an electric pressure washer may be sufficient. Electric models are typically less powerful than gas-powered ones, but they’re also quieter, more affordable, and easier to maintain.
Ultimately, the power output requirements of your pressure washer will depend on the tasks you plan to use it for. Consider the PSI and GPM ratings when choosing between gas and electric models, and make sure the fuel you choose is compatible with your pressure washer’s engine.
Availability and cost
When choosing the fuel for your pressure washer, availability and cost are important factors to consider. Gasoline is the most common fuel used in pressure washers, and it is generally easy to find at gas stations. However, gasoline prices can fluctuate depending on location and market conditions.
Alternatively, diesel is a more cost-effective option for larger pressure washers. It is also readily available at gas stations and can be cheaper than gasoline. It is not recommended for use in smaller pressure washers as it can cause damage to the engine.
Propane is another option for pressure washer fuel, and it is typically cheaper than gasoline or diesel. However, it may not be as readily available at gas stations and may require special equipment for storage.
Ultimately, the availability and cost of fuel will depend on your location and specific needs. Consider your options carefully and choose the fuel that is most affordable and convenient for your pressure washer.
Environmental impact
When considering the fuel to use in a pressure washer, it’s essential to think about the environmental impact. Some fuels, such as gasoline, emit harmful pollutants that can harm both the environment and human health. On the other hand, using electric pressure washers or biofuels can significantly reduce the carbon footprint and minimize pollution. Therefore, it’s crucial to consider the environmental impact when choosing the fuel for your pressure washer.
User preference
When it comes to choosing the fuel for your pressure washer, user preference can play a role. Some users may prefer gasoline for its power and portability, while others may opt for electric for its convenience and ease of use. Consider your specific needs and the requirements of your pressure washer before making a decision on which fuel to use. Proper storage and handling of the chosen fuel is crucial for safety and optimal performance.
Fueling and Operating Tips

Below are the different types of fuel that can be used in a pressure washer and provide tips for fueling and operating your machine to help you get the best results.
Safety precautions
When using a pressure washer, safety should always be a top priority. Here are some important safety precautions to keep in mind:
- Read the manufacturer’s instructions and follow them carefully. Make sure you understand how to operate the pressure washer before using it.
- Always wear protective gear, including eye protection, gloves, and closed-toe shoes. Never wear loose clothing that could get caught in the machine.
- Use the pressure washer on a level surface and make sure it is stable before use.
- Never point the pressure washer wand at yourself or others, as the water pressure can cause serious injuries.
- Keep children and pets away from the area where you are using the pressure washer.
- Use the appropriate fuel for your pressure washer, and make sure it is stored safely and away from heat sources.
- Turn off the pressure washer and disconnect the spark plug wire before performing any maintenance or cleaning.
By following these safety precautions, you can ensure a safe and enjoyable experience while using your pressure washer.
How to fuel a pressure washer
When fueling a pressure washer, use the right type of fuel and follow proper safety procedures. Always refer to the manufacturer’s instructions to determine the appropriate fuel type and capacity for your pressure washer.
Some common fuel options for pressure washers include gasoline, diesel, and propane. Gasoline is a popular choice for smaller machines, while diesel is often used for larger models. Propane is a cleaner-burning alternative to traditional fuels that can also reduce emissions.
When fueling your pressure washer, make sure to do so in a well-ventilated area and away from any open flames or sparks. Avoid overfilling the tank, as this can cause fuel to spill and potentially ignite.
Regular maintenance and inspections can help ensure that your pressure washer operates safely and efficiently. This includes checking the fuel lines, filters, and spark plugs, as well as properly storing the machine when not in use. With the right fuel and proper care, your pressure washer can provide reliable cleaning power for years to come.
Maintenance requirements
Proper maintenance is essential for ensuring the optimal performance and longevity of your pressure washer. Regular maintenance requirements include checking and changing the oil, air filter, spark plug, and fuel filter. Clean the nozzle and spray gun after each use to prevent clogging and ensure a steady flow of water. Proper storage is also crucial to prevent damage from freezing temperatures, moisture, and dust. By following these maintenance requirements, you can keep your pressure washer running smoothly and efficiently for years to come.
Proper storage of fuel
To ensure the longevity of your pressure washer, properly store the fuel. Here are some tips to follow:
- Use a fuel stabilizer: Adding a fuel stabilizer to the fuel tank can prevent the fuel from deteriorating over time.
- Store fuel in a cool, dry place: Exposure to sunlight and high temperatures can cause fuel to break down faster. It’s best to store fuel in a cool, dry place, away from any heat sources.
- Use an airtight container: Fuel can evaporate quickly, which can lead to a loss of potency. Using an airtight container can prevent this from happening.
- Check the expiration date: Gasoline typically has a shelf life of around 6 months to a year, so it’s important to check the expiration date before using it in your pressure washer.
Conclusion
As we come to the end of our discussion on the fuel to use in pressure washers, it’s essential to recap the importance of fuel selection in ensuring optimal performance of your pressure washer. The type of fuel you use can significantly affect the efficiency, lifespan, and overall performance of your pressure washer.
We’ve explored the various fuel options available, including gasoline, diesel, and electric power, and the considerations that should inform your choice. We’ve looked at factors such as cost, availability, and environmental impact, as well as the requirements of your pressure washer’s engine.
Your choice of fuel will depend on your specific needs and preferences. However, it’s crucial to remember that using the wrong fuel can cause severe damage to your pressure washer, leading to costly repairs and even replacement.
In conclusion, we recommend that you carefully consider your options before making a decision on the type of fuel to use in your pressure washer. Make sure to follow the manufacturer’s recommendations and maintenance guidelines to ensure optimal performance and longevity. With the right fuel and proper care, your pressure washer can provide years of reliable service.