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Best Tri Fuel Generator (2025 Update)

If you're looking for a reliable and versatile power source, a tri fuel generator may be the perfect solution for you. These generators are capable of running on three different fuel options – gasoline, propane, and natural gas. This flexibility allows you to easily switch between fuel sources depending on availability and convenience.

Before purchasing a tri fuel generator, there are a few factors you should consider. Firstly, it's important to determine the power output that you'll need. Make sure to calculate the total wattage of the appliances and electronics that you plan to power with the generator. Additionally, consider the runtime of the generator on each fuel type, as well as the refueling process. Some generators may require manual adjustment to switch between fuels, while others offer automated systems.

Are you worried about how noisy the generator might be? Rest assured, there are options on the market that offer quiet operation, perfect for camping trips or residential use. Along with noise level, you may want to think about the size and portability of the generator. Will you need to move it around frequently, or will it stay in a fixed location?

If you're interested in learning more about the best tri fuel generators available, keep reading. In the following paragraphs, we will answer common questions such as: What are the top-rated brands? What are the key features to look for? How do these generators compare in terms of durability and reliability? By the end of this article, you'll have a clear understanding of what to consider before making your purchase.

10 Best Tri Fuel Generator

# Product Image Product Name Product Notes Check Price
1
The product is ideal for converting a Briggs 30471 generator to run on propane or natural gas as alternative fuel.
2
The Tri-Fuel Propane Natural Gas Conversion Kit is ideal for converting a GP8000E generator to run on propane or natural gas.
3
Ideal for powering homes during blackouts with a choice of gas or propane fuel and easy electric start.
4
The Tri-Fuel Propane Natural Gas Conversion Predator 3500 Inverter Generator is ideal for providing portable power in various settings.
5
This product is ideal for converting gasoline generators to run on propane, natural gas, or gasoline.
6
Ideal for converting a generator to run on propane or natural gas as a cheaper and cleaner fuel source.
7
The product is ideal for converting a gasoline-powered generator into one that runs on propane or natural gas.
8
The product is ideal for converting a Honda inverter generator to run on propane, natural gas, or gasoline.
9
Ideal for providing backup power to homes during outages with options for gas or propane fuel, remote start, and transfer switch readiness.
10
The product is ideal for converting a CAT RP6500 generator to run on propane, natural gas, or gasoline.
The product is ideal for converting a Briggs 30471 generator to run on propane or natural gas as alternative fuel.
The Tri-Fuel Propane Natural Gas Conversion Kit is ideal for converting a GP8000E generator to run on propane or natural gas.
Ideal for powering homes during blackouts with a choice of gas or propane fuel and easy electric start.
The Tri-Fuel Propane Natural Gas Conversion Predator 3500 Inverter Generator is ideal for providing portable power in various settings.
This product is ideal for converting gasoline generators to run on propane, natural gas, or gasoline.
Ideal for converting a generator to run on propane or natural gas as a cheaper and cleaner fuel source.
The product is ideal for converting a gasoline-powered generator into one that runs on propane or natural gas.
The product is ideal for converting a Honda inverter generator to run on propane, natural gas, or gasoline.
Ideal for providing backup power to homes during outages with options for gas or propane fuel, remote start, and transfer switch readiness.
The product is ideal for converting a CAT RP6500 generator to run on propane, natural gas, or gasoline.

1. Propane Natural Gas Conversion Generator Champion 41532 Fits Briggs 30471 Alt Fuel Lp

Introducing the Tri-Fuel Conversion Kit, a remarkable solution that allows you to power your generator using not just one, but three fuel options. With this kit, you can effortlessly switch between low pressure natural gas, low pressure propane, and gasoline, giving you ultimate flexibility and convenience.

One of the standout features of this conversion kit is its unique venturi design, which enables installation without the need for any modifications on most generators. This means that you can easily and seamlessly incorporate this kit into your existing setup, saving you time, effort, and money.

To ensure optimal performance, the Tri-Fuel Conversion Kit requires an inlet pressure ranging from 9 to 13.8"wc. This specific range allows for efficient and reliable operation, ensuring that your generator runs smoothly and consistently.

When it comes to regulating the fuel flow, you have the option to choose between Impco or aftermarket regulators. Both options are known for their high-quality construction and reliable performance, providing you with peace of mind knowing that your generator is in good hands.

Whether you're looking to enjoy the cost-effectiveness of natural gas, the convenience of propane, or the availability of gasoline, the Tri-Fuel Conversion Kit is here to meet your diverse needs. Say goodbye to the limitations of single-fuel generators and embrace the freedom and versatility that this kit brings.

With its comprehensive range of fuel options, seamless installation process, and reliable fuel regulation, the Tri-Fuel Conversion Kit is a must-have for any generator owner. Take your power generation capabilities to the next level and experience the convenience, flexibility, and efficiency that this kit offers.

Invest in the Tri-Fuel Conversion Kit today and unlock a world of possibilities for your generator. Whether you're preparing for emergencies, powering outdoor events, or simply looking to maximize the functionality of your generator, this kit is the perfect addition to your setup. Don't miss out on this opportunity to enhance your power generation experience.

2. Tri-Fuel Propane Natural Gas Generator Conversion Generic Gp8000e Gp8000 Green

Introducing the versatile and highly efficient Tri-Fuel Conversion Kit! Designed to provide ultimate flexibility, this conversion kit allows your generator to run on high pressure propane, low pressure propane, low pressure natural gas, or gasoline.

One of the standout features of this conversion kit is its unique venturi design, which enables installation without any modification on most generators. This means that you can easily transform your existing generator into a multi-fuel powerhouse, without the need for extensive alterations or extra components.

With a maximum inlet pressure of 13.8"wc (water column), this conversion kit ensures optimal performance and compatibility. It is important to note that if you choose not to use the included regulator, the maximum inlet pressure should be observed for safe operation.

For added convenience, this Tri-Fuel Conversion Kit is compatible with both Impco and aftermarket regulators. This means that you have the freedom to choose the regulator that best suits your needs and preferences.

Whether you're looking to minimize fuel costs, reduce emissions, or simply enhance the versatility of your generator, the Tri-Fuel Conversion Kit is the perfect solution. Say goodbye to the limitations of running on a single fuel type and embrace the power of choice.

Investing in this conversion kit not only expands the capabilities of your generator, but also provides peace of mind knowing that you have a reliable backup power source that can adapt to various fuel options.

Upgrade your generator today and experience the convenience, efficiency, and versatility that the Tri-Fuel Conversion Kit has to offer. Take control of your power supply and never be limited by a single fuel source again.

3. Dual Fuel Portable Generator: Power Your Home.

The XP13000EH generator is a versatile and powerful tool that is perfect for those who require a reliable source of electricity when power outages occur or when they are off the grid. Powered by a 500cc OHV Duromax Engine, this generator can produce up to 13,000 starting watts and 10,500 running watts with gasoline. When using propane, it can provide up to 12,350 peak watts and 9,975 running watts.

Equipped with a 10-inch wheel diameter, this generator is also easy to move around and transport. Its dual fuel technology allows the user to switch between propane or gasoline as a fuel source, giving them the freedom and flexibility to choose the most convenient option available.

The power panel includes a wide selection of outlets that are compatible with various applications. These outlets include a 120/240V 50A heavy-duty outlet, a 120/240V 30A twist-lock outlet, a 120V 30A twist-lock outlet, and two 120V 20A household outlets.

Safety is a top priority when operating any generator, and the XP13000EH is no exception. The user manual provides detailed safety instructions that should be read before operating the generator to ensure safe and efficient use.

This generator is CARB and EPA approved, making it compliant with emissions standards in all 50 states. This means that the XP13000EH is environmentally friendly and meets the strict guidelines set by the Environmental Protection Agency and California Air Resources Board.

4. Tri-Fuel Propane Natural Gas Conversion Predator 3500 Inverter Generator

Introducing the Tri-Fuel Conversion kit for the model 63584, a versatile and efficient solution for your fuel needs. This conversion kit allows you to run your equipment on high pressure propane, low pressure propane, low pressure natural gas, or gasoline, providing you with flexibility and convenience.

With this conversion kit, you have the flexibility to choose the fuel that best suits your needs. Whether you prefer the convenience of propane or the availability of natural gas, this kit has got you covered. Additionally, if gasoline is your preferred fuel option, you can easily switch back and forth between gasoline and alternative fuels with this kit.

Please note that a case modification is required for the alternative fuel supply hose. This modification ensures that the fuel is delivered safely and efficiently to your equipment.

The maximum inlet pressure, if you choose not to use the included regulator, is 13.8"wc. This ensures optimal performance and safety when using alternative fuels.

For your convenience, this kit is compatible with Impco or aftermarket regulators. This means that you have the flexibility to choose the regulator that best suits your needs and preferences.

Investing in the Tri-Fuel Conversion kit for the model 63584 means that you can run your equipment on multiple fuel options, providing you with versatility and peace of mind. Whether you're using high pressure propane, low pressure propane, low pressure natural gas, or gasoline, this kit ensures that your equipment will operate efficiently and reliably.

Upgrade your equipment today and experience the convenience and flexibility of the Tri-Fuel Conversion kit for the model 63584. Say goodbye to the limitations of a single fuel source and embrace the freedom of choice with this reliable and efficient conversion kit.

5. Honda Tri-Fuel Generator Conversion Kit

Looking for an easy and efficient way to convert your gasoline generator into a tri-fuel hybrid generator? Look no further than the MotorSnorkel kit. With its patented design and easy installation process, the MotorSnorkel kit can have your generator up and running on propane or natural gas in just minutes.

Simply replace the air filter gasket with the MotorSnorkel and add the propane fuel delivery parts (sold separately), and your generator is ready to run on propane or gasoline. And with the ability to easily switch back and forth between the two, you'll have the flexibility you need to power your appliances and tools.

Unlike other conversion kits on the market, the MotorSnorkel requires no drilling of the carburetor or any additional cabinet space. Plus, it's warranty friendly and can be removed without a trace if needed.

The kit includes the MotorSnorkel, engine fuel control regulator with mounting hardware, fuel calibration block, and instructions for easy installation. And with lifetime tech support, you can rest assured that you'll have the help you need if any issues arise.

So why wait? Upgrade your generator with the MotorSnorkel kit today and enjoy the benefits of a tri-fuel hybrid generator that can run on propane, natural gas, or gasoline.

6. Propane Natural Gas Conversion Predator 3500 Inverter Generator

Looking for a reliable and efficient way to power your model 63584? Look no further than the Tri-Fuel Conversion kit. This conversion kit allows you to run your generator on low pressure natural gas, low pressure propane or gasoline, giving you the flexibility to choose the fuel source that is most convenient and cost-effective for you.

With this conversion kit, you can say goodbye to the hassle and expense of constantly refueling with gasoline. Instead, you can enjoy the convenience of using natural gas or propane, which are often readily available and more affordable than gasoline.

Please note that some case modification is required to install the alternative fuel supply hose, but this is a straightforward process that can be easily completed with basic tools and a little know-how.

To ensure optimal performance, the Tri-Fuel Conversion kit requires an inlet pressure of 9-13.8"wc. Additionally, it is recommended to use an Impco or aftermarket regulator for best results.

7. Generic Gp5500 Propane/natural Gas Tri-Fuel Conversion Kit

Introducing the remarkable Tri-Fuel Conversion kit! This innovative kit offers you the flexibility to run your generator on multiple fuel sources, including high pressure propane, low pressure propane, low pressure natural gas, or gasoline. With this kit, you can easily switch between fuels based on availability or your specific needs.

One of the standout features of this Tri-Fuel Conversion kit is its unique venturi design. This design eliminates the need for any modifications on most generators, making installation a breeze. No more hassle or extra expenses associated with customization – simply install the kit and start enjoying the benefits of multi-fuel functionality.

Safety is paramount when it comes to fuel conversion, and this kit has got you covered. The maximum inlet pressure, if you choose not to use the included regulator, is 13.8"wc. This ensures that your generator operates within safe parameters, offering you peace of mind and worry-free performance.

To further enhance its compatibility, the Tri-Fuel Conversion kit is compatible with Impco or aftermarket regulators. This gives you the freedom to select the regulator that suits your specific preferences or requirements.

Investing in this Tri-Fuel Conversion kit means you can say goodbye to the limitations of a single fuel source. No longer will you be reliant on the availability or cost of a particular fuel – you have the power to choose. Whether you opt for high pressure propane, low pressure propane, low pressure natural gas, or gasoline, this kit ensures that your generator runs smoothly and efficiently.

Experience the convenience and versatility of the Tri-Fuel Conversion kit today. Upgrade your generator and unlock a world of fuel options with this reliable and efficient conversion kit.

8. Honda Tri-Fuel Kit For Grenergy Generators

The Grenergy Tri-fuel kit is a comprehensive solution for anyone looking for a reliable and efficient backup power source. With this kit, you get everything you need to start running your generator right out of the box.

One of the key benefits of this kit is its ability to run on propane, an alternative fuel that's readily available, easy to store, and never goes bad. In case of a natural disaster or emergency, you can switch your generator between gasoline and propane effortlessly, giving you the flexibility to use it wherever you need it most.

Another advantage of the Grenergy Tri-fuel kit is its carburetor-friendly design. You can store your generator for extended periods without worrying about carburetor issues, even if you forget to drain the float bowl. Once you switch to propane, you'll never want to go back to gasoline.

If you're tired of frequent gas spills, trips to the gas station, and dealing with ethanol-blended gasoline, this kit offers a practical solution. With just one single BBQ-size propane tank, your generator can run non-stop for up to 15-20 hours.

Propane burns much cleaner than gasoline, resulting in no stinky exhaust smell and fewer carbon deposits. This cleaner burn translates to a longer engine life and reduced maintenance requirements. You can enjoy cleaner engine oil and cleaner spark plugs without the worry of gumming up your carburetor.

9. Westinghouse Dual Fuel Backup Generator – Peak Power!

The Westinghouse WGen7500DF Dual Fuel Portable Generator is designed to provide reliable power to households, job sites, and outdoor activities. With a powerful 420cc Westinghouse 4-stroke OHV engine, it can produce 7500 rated watts and 9500 peak watts when fueled with gasoline. Alternatively, it can deliver 6750 rated watts and 8550 peak watts when fueled with propane. With a 6.6-gallon fuel tank, it can run continuously for up to 16 hours on a single tank of gasoline, or 14 hours on a 20-pound propane tank.

The generator features an electric push-button start and remote key fob, making it easy to start the unit from a distance. The intuitive control panel features two GFCI 5-20R 120V household duplex outlets and one L14-30R 120/240V 30A twist-lock outlet, with rubber covers for added safety. This generator is also plug-and-play, coming with a remote start key fob, 12V battery charger, oil, an oil funnel, a tool kit, and a user's manual, requiring minimal assembly to get started right out of the box.

The WGen7500DF is equipped with a long-lasting cast iron sleeve and features an automatic low oil shutdown and digital hour meter to help protect the engine. All Westinghouse portable generators are functionally tested in the factory and may contain minimum residual oil and/or fuel odor. This generator is EPA and CARB compliant, making it safe for use in all 50 states. It is backed by a 3-year limited service, labor, and parts coverage with a nationwide customer service network.

10. Propane/natural Gas Tri-Fuel Conversion Kit Fits Cat Rp6500 Generator

Introducing the versatile and innovative Tri-Fuel Conversion Kit, designed to enhance the functionality of your generator. This remarkable kit allows you to effortlessly switch between high pressure propane, low pressure propane, low pressure natural gas, and gasoline, providing you with a wide range of options to power your generator.

One of the standout features of this Tri-Fuel Conversion Kit is its unique venturi design, which enables seamless installation without the need for any modifications on most generators. This means you can easily upgrade your current generator without any hassle or additional expenses.

When it comes to fuel pressure, you can rest assured that this kit has you covered. With a maximum inlet pressure of 13.8"wc (water column), you can enjoy a consistent and reliable fuel supply, ensuring optimal performance of your generator.

To ensure a smooth and efficient operation, the Tri-Fuel Conversion Kit is compatible with both Impco and Aftermarket Regulators. This versatility allows you to choose the regulator that best suits your specific needs and preferences, providing you with a customized and tailored experience.

Whether you're looking to power your generator with propane, natural gas, or gasoline, the Tri-Fuel Conversion Kit offers a reliable and flexible solution. With its easy installation process, compatibility with most generators, and various fuel options, this kit is the perfect choice for those seeking versatility and convenience.

Upgrade your generator today and unlock a world of possibilities with the Tri-Fuel Conversion Kit. Experience the freedom to choose your fuel source and enjoy the peace of mind that comes with a reliable and efficient power supply. Don't limit yourself to just one fuel option – embrace the flexibility and convenience that this kit offers. Invest in the Tri-Fuel Conversion Kit and take your generator to new heights of performance.

Best Tri Fuel Generator FAQs

Are there any safety considerations when using a tri fuel generator?

Yes, there are several safety considerations to keep in mind when using a tri fuel generator. Here are some important points to consider:

1. Ventilation: Tri fuel generators produce exhaust gases that can be harmful if not properly ventilated. Always operate the generator in a well-ventilated area to prevent the accumulation of carbon monoxide.

2. Fuel Storage: If you have multiple fuel options, ensure that all fuel sources are stored safely and away from any potential ignition sources. Follow proper storage guidelines to prevent leaks, spills, or accidents.

3. Compatibility: Before using a specific fuel source, make sure it is compatible with your generator. Check the manufacturer's recommendations and guidelines to avoid any damage or safety hazards.

4. Electrical Safety: When connecting your tri fuel generator to electrical devices, be cautious with the connections to prevent electrical shocks or short circuits. Follow the manufacturer's instructions and use appropriate cords and outlets.

5. Maintenance: Regular maintenance is crucial to ensure safe operation. Keep the generator clean, inspect it for any damages, and follow the recommended maintenance schedule provided by the manufacturer.

6. Operator Awareness: Properly educate yourself and anyone using the generator about its safe operation. Be aware of emergency shutdown procedures, how to handle fuel spills, and other potential hazards.

In summary, always prioritize safety when using a tri fuel generator by ensuring proper ventilation, safe fuel storage, compatibility, electrical safety, regular maintenance, and operator awareness.

Can a tri fuel generator be easily converted to run on different fuel types?

Yes, a tri fuel generator can be converted to run on different fuel types, but the ease of conversion depends on the specific model and its design. Tri fuel generators are designed to operate on three different types of fuel – gasoline, propane, and natural gas. The conversion process typically involves adjusting the fuel delivery system, installing the necessary conversion kit, and making appropriate adjustments to the engine's carburetor or fuel injection system.

While some tri fuel generators are designed to be easily converted by the end user, others may require professional assistance or specialized knowledge. It is important to consult the manufacturer's instructions or seek guidance from a qualified technician to ensure a safe and proper conversion.

Additionally, it's worth noting that not all tri fuel generators are compatible with all fuel types. Some models may only support two out of the three fuel options, so it's important to check the specifications of the generator before attempting any conversions.

Can a tri fuel generator run on natural gas, propane, and gasoline simultaneously?

No, a tri fuel generator cannot run on natural gas, propane, and gasoline simultaneously. Tri fuel generators are designed to run on multiple fuel options, typically natural gas, propane, and gasoline. However, they are not designed to run on all three fuels simultaneously. These generators usually have a selector switch that allows you to choose which fuel source to use. You can switch between natural gas, propane, and gasoline depending on availability or preference. It is important to note that when using a tri fuel generator, you should only use one fuel source at a time and follow the manufacturer's guidelines for proper operation and fuel selection.

How does a tri fuel generator differ from a dual fuel generator?

A tri fuel generator and a dual fuel generator differ in terms of the number of fuel options they offer. A tri fuel generator, as the name suggests, provides three fuel options to choose from, typically gasoline, propane, and natural gas. This versatility allows users to switch between different fuel sources based on availability, convenience, and cost-effectiveness.

On the other hand, a dual fuel generator offers two fuel options, commonly gasoline and propane. The ability to switch between these two fuels provides flexibility and backup options, especially during emergencies or in areas where a specific fuel may be scarce or expensive.

Both tri fuel and dual fuel generators have their advantages. Tri fuel generators offer an additional fuel option, expanding the flexibility and availability of fuel choices. However, dual fuel generators are more common and readily available in the market, making them a popular choice for many consumers.

Ultimately, the choice between a tri fuel and dual fuel generator depends on individual needs, preferences, and factors such as fuel availability and cost in your specific location.

How loud are the best tri fuel generators compared to other generator types?

The noise level of a generator is an important consideration, especially when it comes to residential or recreational use. Tri-fuel generators, which can run on gasoline, propane, or natural gas, generally produce noise levels comparable to other generator types. The noise level is primarily determined by the engine and the design of the generator.

In general, generators with larger engines tend to produce more noise. However, advancements in technology have led to the development of quieter generators across all types. Manufacturers often specify the noise level in decibels (dB) at a certain distance, usually measured from 23 feet away.

To compare noise levels, it is essential to check the specifications provided by the manufacturer for each generator model. Typically, a high-quality tri-fuel generator would produce noise levels ranging from 50 to 70 dB, which is relatively similar to other generator types.

To further reduce noise, you can consider using soundproofing materials or placing the generator at a distance from your living area. It is always recommended to review the manufacturer's specifications to ensure you choose a generator that meets your noise level requirements.

What are the top-rated tri fuel generators available on the market?

There are several top-rated tri fuel generators available on the market that offer reliable power solutions for various applications. One highly regarded option is the Honda EU7000iS tri fuel generator. It is known for its exceptional performance, fuel efficiency, and quiet operation. Another popular choice is the Champion Power Equipment 100165 tri fuel generator, which offers versatility and power with its robust engine and multiple fuel options. The Westinghouse WGen9500DF tri fuel generator is also highly rated for its durability, power output, and ease of use. These generators are designed to run on multiple fuels, including gasoline, propane, and natural gas, providing flexibility and convenience in different situations. It's important to consider factors such as power output, fuel efficiency, noise levels, and reliability when selecting a tri fuel generator.

What features should I look for when choosing the best tri fuel generator?

When choosing the best tri fuel generator, there are several important features to consider.

1. Fuel Flexibility: The primary feature of a tri fuel generator is its ability to run on three different fuel types – gasoline, propane, and natural gas. Look for a generator that easily switches between these fuels, allowing you to choose the most convenient and readily available option.

2. Power Output: Consider the power output of the generator to ensure it meets your needs. Determine the wattage required for the appliances and equipment you plan to power during an outage, and choose a generator that provides sufficient power.

3. Runtime: Look for a generator with a long runtime, especially if you anticipate prolonged power outages. A larger fuel tank can provide extended periods of operation without the need for frequent refueling.

4. Noise Level: Consider the noise level of the generator, particularly if you plan to use it in residential areas. Look for models with noise-reducing features to ensure minimal disturbance.

5. Portability: If you require a portable generator, consider its weight, size, and any additional features that make transportation easier, such as handles or wheels.

6. Safety Features: Look for safety features like low oil shutdown, overload protection, and automatic voltage regulation to protect both the generator and connected appliances.

7. Quality and Durability: Choose a generator from a reputable brand known for producing high-quality and durable products. Read customer reviews and consider warranty options to ensure you are investing in a reliable generator.

By considering these features, you can choose the best tri fuel generator that meets your specific requirements and provides reliable power during emergencies.

What is the fuel efficiency of the best tri fuel generators?

The fuel efficiency of tri fuel generators can vary depending on the specific model and brand. However, generally speaking, tri fuel generators are designed to provide efficient performance by utilizing multiple fuel options. These generators can typically run on three different types of fuel – gasoline, propane, and natural gas.

When it comes to fuel efficiency, propane is often considered to be the most efficient fuel for generators. It burns cleaner and produces fewer emissions compared to gasoline. Natural gas is also a clean-burning fuel option. However, the actual fuel efficiency will depend on factors such as the generator's engine design, load capacity, and the specific fuel being used.

To determine the fuel efficiency of a particular tri fuel generator, it is recommended to refer to the manufacturer's specifications or consult with a reputable dealer. They can provide detailed information about the specific generator's fuel consumption rates and help you select the best option based on your needs and preferences.

What is the warranty and customer support offered for the best tri fuel generators?

The warranty and customer support offered for the best tri fuel generators can vary depending on the manufacturer and the specific model. However, in general, most reputable brands provide a warranty period for their generators, which typically ranges from 1 to 3 years. This warranty covers any manufacturing defects or issues that may arise during normal use.

In terms of customer support, top tri fuel generator manufacturers usually have dedicated customer service teams that are available to assist with any inquiries or problems. They can provide technical support, troubleshooting guidance, and help with any warranty claims.

It is important to research and consider the warranty and customer support offered by different brands before making a purchase. Reading customer reviews and testimonials can also provide insights into the quality of customer support provided by a particular manufacturer.

Which tri fuel generator offers the longest runtime on a single tank of fuel?

One of the tri fuel generators that offers the longest runtime on a single tank of fuel is the Champion Power Equipment 100519. This generator has a powerful engine and a large fuel tank capacity, which allows it to run for extended periods. The 100519 model has a runtime of up to 10.5 hours on propane gas, 7.5 hours on gasoline, and 5.5 hours on natural gas, making it a versatile option for different fuel preferences. It also features a fuel selector switch, making it easy to switch between fuel sources. The longer runtime on a single tank of fuel can be beneficial in situations where there may be limited access to refuel the generator. However, it is important to note that runtime can vary based on the load being powered and other factors, so it is always recommended to consult the manufacturer's specifications for more accurate information.