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Dual-Fuel Generator Maintenance Checklist: What You Need to Know

As a dual-fuel generator owner, you enjoy the best of both energy worlds – gasoline and propane. You invested in this versatile machine, so you want it to last long and run well. That’s why we created this guide for you. It will help you maintain your generator’s reliability and longevity. 

Whether you need backup power for your home during emergencies or extra power for your outdoor events, these generators can handle it all.

In this guide, we cover everything you need to know about maintenance. You will learn how to perform regular checks, prevent common issues, and fix minor problems. 

No matter if you are a new or experienced dual-fuel generator user, our guide will give you expert tips to optimize your generator’s performance and keep it running smoothly in any situation.

Product Reviews: Best Dual-Fuel Generators 

Dual-fuel generators require moderate maintenance in comparison to other power sources, but you can further minimize these requirements by selecting the best dual-fuel generators in the market. 

The following reviews will provide valuable insights for either case; whether you’re searching for a generator or simply seeking a better understanding of the industry’s benchmarks.

Pulsar Portable Dual-Fuel Generator – Best Wattage

The Pulsar PG15KVTW 12000W Portable Dual-Fuel Generator with Electric Start is a true powerhouse, delivering a substantial 15,000 peak watts and consistent 12,000 rated watts to handle various power requirements effortlessly.

Powered by a robust 713cc V-Twin Cylinder engine, this generator guarantees consistent performance. Its standout feature is the dual-fuel capability, offering a choice between gasoline and propane as fuel sources, ensuring adaptability for various scenarios. 

The generator is designed for durability and convenience with a heavy-duty frame, large wheels, and foldable handles. The electric push-start mechanism enhances usability, making the Pulsar PG15KVTW a dependable and versatile power solution for home backup, job sites, or recreation.


  • 10.6-gallon fuel tank for extended runtime
  • 3-in-1 digital hour meter, fuel gauge, and ATS capability for efficient monitoring and management
  • Multiple outlets for device and appliance compatibility
  • Overhead Valve technology for improved fuel efficiency and smoother operation
  • Automatic Voltage Regulation (AVR) for stable output voltage and device protection
  • EPA and CARB compliant for environmental standards


When it comes to backup power, the EcoFlow Smart Generator stands out from the rest. With dual-fuel support, it offers higher efficiency, ease of use, and fewer emissions with either LPG (Propane) or gas. 

Seamlessly integrating with your EcoFlow DELTA Max, Pro, or Power Kits, this smart generator is the perfect companion for your portable power station. It’s one of the most eco-friendly options when it comes to fuel-based generators and is an incredible choice if you don’t want to worry about maintenance more than necessary. 

Its multiple alerts and smartphone connectivity allow you to look for warning signs from the comfort of your seat.


  • Charge your DELTA Pro/Max or Power Kits automatically and efficiently
  • Control and monitor your Smart Generator remotely with the EcoFlow app
  • Stay safe with 5 alert methods, including carbon monoxide alerts
  • Generate up to 5.4kWh with gasoline or 20kWh with LPG, with up to 12.5 hours of LPG runtime
  • Save fuel, reduce noise, and lower emissions with the fuel-efficient design
  • Use AC appliances and recharge your batteries at the same time
  • Start the Smart Generator with an electric button, the app, or the manual starter grip
  • Power and charge your essentials with gasoline or propane (LPG)
  • Maintain your Smart Generator easily with the spacious side access door and the noise muffler

PULSAR 8000W PORTABLE DUAL-FUEL GENERATOR - Best Reliability During Outages

The Pulsar PG10000BRCO sets a new standard in providing reliable power during emergencies. Being one of the best dual-fuel generators available right now, it lets you run on gasoline or liquid propane gas, ensuring you'll never be left in the dark.

It eliminates all the deficiencies of propane fuel and retains all its good qualities by running on gasoline as well. It can deliver an impressive peak wattage, making it shine as a backup power solution. 

Pulsar is known for its high-quality dual-fuel generators, so if the PG10000BRCO doesn’t have the ideal output for you, just check out the other items in their product line!


  • Ample power supply with 10,000-Watt peak/8,000-Watt rated (gasoline) and 9,000-Watt peak/7,200-Watt rated (LPG)
  • Durable and powerful 420cc, 4-stroke, OHV, air-cooled engine in a powder-coated steel frame
  • Easy start-up with Remote, Electric, and Recoil options
  • Multiple outlets for various devices and appliances, one for your RV generator
  • Portable and convenient with fold-down handles and 12" never-flat wheels
  • User-friendly digital meter for voltage, frequency, run time, total hours, and maintenance data
  • Seamless dual-fuel operation with propane hose included
  • Long-lasting 6.6 Gal. fuel tank for up to 8.5 hours of half load on gasoline
  • Clean and eco-friendly with CARB & EPA approval

Understanding Dual-Fuel Generators

You may be wondering what the build-up around dual-fuel generators is about. At the surface, all they really do is allow two fuel compartments for two separate sources instead of one. However, their versatility goes beyond just that. 

Take a standard propane/gasoline dual-fuel generator as an example. Propane is a cleaner, more abundant source of energy, whereas gasoline has a significant carbon footprint but boasts a much stronger energy profile. 

With this flexibility, you can utilize the weaker fuel as long as you’re handling low-energy appliances and switch to gasoline whenever you need to power heavier appliances.

Modern generators offer seamless transitions between two fuel sources, letting you easily switch from propane to diesel with a click of a button. You can see how dual-fuel generators are simply much more feature-rich than traditional generators, and it’s almost always a plus to have that capability. 

Maintenance Tips for Your Dual-Fuel Generator 

With technological advances, dual-fuel generators have become more and more low maintenance. 

However, there are certain practices you should employ to ensure your generators are running in tip-top shape. These chores don’t have to be too regular, especially if you’re only using your generators at set times. 

Preventing Contamination

One of the most important points of housing a well-maintained dual-fuel generator is protecting against fuel contamination. Contaminated fuel is a killer for these generators, as it can lead to engine problems, decreased efficiency, and even complete generator failure. 

To ensure the longevity and reliable performance of your generator, you can employ these safety precautions alongside your regular maintenance chores:

  • Fuel Additives: Companies often suggest certain fuel stabilizers and additives that go well with their products. Use these to prolong fuel shelf life and prevent degradation.
  • Avoid Water Intrusion: In certain situations, water can accumulate in fuel tanks due to condensation or storage complications. Water-contaminated fuel can disrupt engine operation, so remember to drain water from fuel tanks as needed regularly.
  • Emergency Fuel Shutdown: In case of fuel contamination, it's essential to know how to shut down the fuel supply to your generator to prevent further damage. Higher-end products might have a remote emergency kill-switch feature, which can be incredibly useful.

Running And Exercising Your Generator

Generators are a lot like us — they don’t do well when you expect them to run without a proper warm-up

A good practice is to regularly run the generator under load for a short period, even if you don't need power. This helps prevent fuel from building up and keeps the engine components functioning optimally.

Additionally, If your generator has an exercise mode, use it to run the generator without powering any appliances. This helps maintain engine lubrication and has the same effect as running the generator on load. 

However, it’s a bad utilization of fuel and should only be done for short periods.

Air Ventilation And Cooling

Burning fuel for hours on end is certainly something that can heat up your dual-fuel generator's components. These machines often have checks and balances in place to prevent overheating, but you still have to ensure these failsafes are running smoothly. 

Air Filters

For one, unchecked contaminations can end up clogging your air filters, causing heat to build up inside your engine. Try to schedule a time within the month to clean your air filters. Alternatively, if you have a smart generator, you might be able to check the engine temperature remotely. 

Carry out your maintenance chores once it crosses a certain threshold.

Cooling System

The same rules apply to your dual-fuel generator's cooling system.  Keep the cooling system clean and clear of debris, monitor the coolant level and ensure proper circulation, and keep checking the generator's temperature for warning signs. 

Optimal Storage Practices for Dual-Fuel Generator Fuels

Perhaps the only additional hassle of going for dual-fuel generators is the fact that there are two fuel sources instead of one. While this adds to their flexibility, it also means you have to treat both fuel tanks and both fuel storages differently. 

The table below is helpful if you want a good idea of how to store gasoline and propane, two of the most common fuel sources in dual-fuel generators.

Fuel Type



Fuel Tank Preparation

Add fuel stabilizer

Ensure the fuel tank Is empty 

Optimal Fuel Usage

Run until the tank is empty before adding more fuel

Run until the tank is empty before adding more fuel

Fuel Storage

Store in a cool, dry place

Keep in a well-ventilated area

Fuel Tank Ventilation

Clean air vents regularly

No solid debris to warrant regular air vent cleaning

Regular Inspections

Aside from all the factors we’ve mentioned, regular inspections help ensure everything is well in place and functioning properly. 

There’s a list of chores you should go through at least once a month, which includes: 

  • Ensuring that the generator is placed on a level surface and well-ventilated area and its surrounding environment is well-maintained
  • Performing routine visual checks for fuel leaks and loose connections
  • Checking for signs of engine wear and tear

Other than that, hiring a professional for a routine inspection is always a good idea to check for issues beyond your expertise. Whenever you buy a product, make sure you know who to call when there’s an unexpected problem with your generator.

How To Get The Best Dual-Fuel Generator Maintenance Support

Proper maintenance is really important for your dual-fuel generator. It can make it last longer and run better. It can also save you some bucks and headaches down the road.

When you shop for dual generators for sale, don’t forget to check out the company’s reputation and support. A solid warranty, insurance, and customer service mean that the company cares about its product. They can also help you out with any issues or questions you might have.

Some vendors are awesome and offer installation and check-up services for a small fee. This can make your life a lot easier and keep your generator in top shape. You can also take a look at our guide for some handy tips on how to maintain your dual-fuel generator yourself.

FAQs About Dual-Fuel Generators

Have more questions about dual fuel generator maintenance? We answer the most popular questions online below.

Can You Keep Your Generator Running Every day?

Typically, it’s recommended you only keep your fuel-powered generators on for a few hours and allow them to cool down. While you can keep generators running for days — as long as the fuel allows it — it’s recommended that you turn it off and change the oil after consistent use.

What’s The Most Efficient Fuel For A Generator?

Diesel is the most efficient fuel for a generator. However, it has the highest emissions out of all the fuel sources and is unsustainable in the long run. 

Are Dual-Fuel Generators Better For The Environment?

Yes, dual-fuel generators primarily run on natural gas fuels such as propane, which has significantly lower emissions and greater fuel efficiency. Their ability to transition allows them to burn out the complete fuel effectively.


You can enjoy the best of both worlds with dual-fuel generators. They are often better than traditional generators, but they also need proper maintenance. 

That’s why you should look for a durable and long-lasting product that suits your needs and requirements. You can find the right product for you in the right marketplaces.

One of the best marketplaces to buy generators is Solar Paradise. We have a wide range of dual-fuel generators, as well as portable and solar generators for backup power solutions. You can find the perfect generator for your needs at Solar Paradise.

If you have any questions about our products, just contact us. Our friendly and helpful team members will get back to you as soon as possible.

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