Best Generator Fuel

What Ibest duel fuel generators on the market fs The Best Generator Fuel?

A major consideration for any generator purchase is which fuel type or types would best meet the buyers’ power generation needs? Most home generators and portable generators are powered by unleaded gasoline, diesel, propane, or natural gas. Some generators, such as dual fuel generators and tri fuel generators, can be powered by two or all three fuel types. Read below to figure out which fuel types and generators may be right for you.




Unleaded Gas


Unleaded Gas is a great fuel option because of its wide availability. Just go to your local gas station, fill-up a 5-10 gallon container, and you are set. Unleaded gasoline is also portable which makes it a great option for those looking to be more mobile and portable with their generator. There is no large propane tank to contend with.

Briggs & Stratton 30469 6,000 Watt 342cc Gas Powered Portable Generator With Wheel KitDisadvantages

Unleaded gasoline is less efficient than natural gas or propane. Further, gas may not be readily available during power outages and disasters such as hurricanes, floods, tornados, and blizzards. Gas is also highly flammable and storing large quantities of fuel may be hazardous. Unleaded gas has a shelf life of about 1 year so long-term hoarding of gas is not a good solution.


Unleaded Gas is a reliable fuel source and is most often widely available. It maximizes portability of a generator. Be smart about how you store it and consider it a viable fuel option. See our article Best Small Gas Generators. See gas generators for sale.


Diesel Fuel


Diesel fuel is strong in areas where unleaded fuel lacks. Diesel fuel is the least flammable fuel source and is more easily obtained during natural disasters. Diesel generator engines are designed for high workloads and run more efficiently than generators designed to operate solely on unleaded gas.


Diesel powered generators are typically louder than generators powered by unleaded gas. Large storage tanks and local regulatory requirements can increase the installations costs, hassle, and maintenance of the generator system. Diesel powered generators are heavier and not as portable as most unleaded gas generators.

Finally, diesel engines emit more pollution and some states limit the number of hours per year a diesel engine may be run.


Diesel fuel generators are great for industrial use and in home use situations. They tend to be a little more expensive but are reliable and long lasting. See our Best Diesel Generators For Home review. See Diesel Generators For Sale.


Liquid Propane Gas

Advantagbest small propane generatorses

Propane is an outstanding fuel choice for generators. Engines run more quietly on propane, making it excellent for home use. Propane is a cleaner burning fuel than gasoline and is more emission compliant. Propane boasts a longer shelf life than unleaded gasoline and diesel. Propane is readily available during power outages and natural disasters when gasoline is often unable to be pumped.




Propane begins to derate at 20 degrees F and lower so it may not be the best choice in extreme cold (below zero temperatures). Propane is a more expensive fuel and propane generators can cost more to operate than an unleaded gas or diesel generator.


Propane is an excellent fuel for a more quiet and clean experience. It is readily available at most times and home delivery is even option. A great option for temperatures above 20 degrees F. See our Best Propane Generators For The Home review. See Propane Generators For Sale.


Natural Gas Generator

Kohler 14RESAL 14,000-Watt Air-Cooled Standby Generator with 100 Amp16-Circuit Automatic Transfer SwitchAdvantages

Natural Gas generators can be an excellent solution for the home. Natural gas offers an unlimited fuel supply to homes with natural gas. Natural gas engines run more quietly than unleaded or diesel generators.  Natural gas is readily available during a power outage as electricity is not required to pump or feed it to your home.


Natural gas generators may not be a good option for areas prone to earthquakes. Tremors may cause interruptions in natural gas feed. Natural gas generators are more expensive to run and natural gas is less efficient than unleaded or diesel.


Natural gas is a good fuel source for homes with natural gas feeds. Natural gas can offer an unlimited supply of generator fuel but may not be the best solution for earthquake prone areas. Just be sure to follow safety precautions to minimize risks. See here for our Best Natural Gas Generators For Home review.  See Natural Gas Generators For Sale.



Each fuel type has its advantages and disadvantages. Your situation will help determine the best fit for you. Why not consider a dual fuel generator or tri fuel generator to allow you to diversify your fueling capabilities? This ensures that you will always be able to find a fuel source for your generator and to use it in any situation at home or on a trip. In hot weather or cold weather.




Best 4000 Watt Generator For 2015

A 4000 watt generator packs the power needed for recreational activities, such as camping and tailgating, and is the minimum recommended wattage for an extended use situation in the home. A 4000 watt generator is typically portable. Versatility of use combined with its portable nature make a 4000 watt generator a great value for someone looking for a multi-use generator at a bargain price.

Here are our top picks:


Overall Best 4000 Watt Generator

DuroStar DS4000S 4,000 Watt 7.0 HP OHV 4-Cycle Gas Powered Portable Generator

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The DuroStar DS4000S is our choice for best 4000 watt generator in 2015.  We like the DS4000S  because it is affordable, reliable, portable, and can be used for home or recreational use. An added bonus we observed during use is the generator is very quiet. The DS4000S was recorded with a noise level rating of just 69 dBA.


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With 4000 starting watts, the DuroStar 4000S is able to handle many different devices, including refrigerators, microwaves, electrical ranges, security systems, home power tools, televisions and more. Every item listed may not be able to run at the same time, but the DS4000S is able to provide the power needed for multiple applications during an extended power outage. The generator has an 8 hour run time at half load, or 50% output capacity.

The DuroStar DS4000S generator is a great choice for emergency preparedness. The stainless steel construction and protected electrical connections mean the device is safe to run in tough outdoor conditions, including blizzards and hurricanes.

Other features include, a 4-gallon fuel tank with an easily readable gauge. The heavy duty steel frame has four-point fully isolated motor mounts for smooth and quiet operation. The DS4000S is equipped with recoil start, and automatic low-oil shut off to protect the engine. The DS4000S weights 92.4 pounds. A tool-kit is also included with the generator.

Note that this generator is not CARB compliant, which means it can’t be sold in California. The Champion 46539 generator reviewed below is authorized for sale and use in California.

We were very impressed with the high performance, quiet nature, and relatively low price of the DS4000S. Customer reviews were similarly favorable, with many online reviewers telling personal stories of satisfaction with the DS4000S through blizzards and snow storms.


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Best Wireless Remote Electric Start 4000 Watt Generator

Champion Power Equipment 46539 4,000 Watt 196cc 4-Stroke Gas Powered Portable Generator With Wireless Remote Electric Start (CARB Compliant)

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We found the Champion 46539 to be the best 4000 watt wireless start generator on the market. The wireless start feature is remote control operated and works up to 80 feet. Remote start is a nice feature during storms, blizzards, and hurricanes.

Weighing in at 140 pounds, the Champion 46539 includes a portability kit w/8-inch wheels for easy transport to construction job sites, camp sites, or a tailgate.

The Champion 46539 allows for twelve hours of operation at a 50% capacity. This is the standard unit of measure; 50% capacity is usually enough to power a refrigerator, lights, and a sump pump at the same time.  Engine oil is included. Champion also offers free lifetime technical support and two year limited warranty.

This 4000 watt generator includes one 120V Duplex Outlet, one 120V Twistlock outlet, and one RV Receptacle (TT-30R).


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Best 4000 Watt Dual Fuel Gas and Propane Generator

DuroMax XP4400EH 7 HP Dual Fuel Propane/Gas Powered Portable Electric Start Generator, 4400-Watt

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The DuroMax XP4400EH can run on propane or gas – a big advantage for emergency preparedness. The design of the XP4000EH makes it simple to switch from gas to propane. The flexible line makes it easy to hook up any size propane tank – including the one from your backyard grill.

Click here for our review of the best duel fuel generators.

The unit is easily portable. It’s 23.8” long by 20” wide by 18” high. At 128 pounds, with a durable frame which includes never-flat wheels, the 4400 watt generator can easily go wherever you need.

Note that this generator is not for sale to California residents.


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