Best Fuel Additive For Small Engines for 2023: Our Top 10 Picks

Sometimes it might be quite difficult to find the best fuel additive for small engines. With every niche market offering so many different products, it makes sense that this is the case.

Unfortunately, this very fact can make it incredibly difficult to find the item that best suits your needs, which is why we’ve put together this fuel additive for small engines buying guide.

Our Favorites:

#	Preview	Product
1		STA-BIL Fast Fix Small Engine Treatment - Cleans Carbs and Injectors - Fixes Rough Running Engines -...	Check Price
2		STAR BRITE Star Tron Enzyme Fuel Treatment, Small Engine Formula, 8 Fl Oz – Treats up to 48 Gals...	Check Price
3		STAR BRITE Star Tron Enzyme Fuel Treatment Concentrate, 8 Fl. Oz. – Treats up to 128 Gallons –...	Check Price
4		STA-BIL Small Engine Pro Multi-System Additive - Protects Against Ethanol - Cleans Carb And...	Check Price
5		STAR BRITE Star Tron Enzyme Fuel Treatment SEF Gasoline Formula - 1 oz. Treats 6 Gallons - 8 OZ...	Check Price
6		Stanadyne Performance Formula Diesel Fuel Additive 2 Pack of 1/2 Gallon Jugs - Part # 38566	Check Price
7		BIOBOR JF Diesel Fuel Additive: Highly Effective Fuel Biocide Supplement, Prevents Corrosion of Fuel...	Check Price
8		Lucas Oil 10020-PK24 Fuel Treatment Additive - 5.25 oz, (Pack of 24)	Check Price
9		Stanadyne Performance Formula Diesel Fuel Additive - 16 Oz. Case of 12	Check Price
10		zMAX 58-011 - Engine & Fuel Formula Kit - Easy to Use - Reduces Carbon Build-Up & Lubricates Metal...	Check Price

The 10 Best Fuel Additive For Small Engines Reviews:

Bestseller No. 1

STA-BIL Fast Fix Small Engine Treatment - Cleans Carbs and Injectors - Fixes Rough Running Engines - Eliminates Water - Treats 10 Gallons, 4 fl. oz. (22303)

• Fixes poor/non-running engines by eating the gum and varnish that causes rough starts, or no starts
• Fixes issues caused by ethanol blended fuels
• Cleans the entire fuel system - Simultaneously cleans injectors/carburetors while cleaning the rest of the fuel system
• Prevents the need to disassemble the engine and is compatible with ALL small engines including snow blowers, lawn mowers, chainsaws, generators, and more!
• Treats 10 gallons

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SaleBestseller No. 2

STAR BRITE Star Tron Enzyme Fuel Treatment, Small Engine Formula, 8 Fl Oz – Treats up to 48 Gals – Gas Additive Rejuvenates & Stabilizes Old Gasoline, Cures & Prevents Ethanol Problems

• UNLEASH YOUR ENGINE'S FULL POTENTIAL - Star Tron Enzyme Fuel Treatment uses advanced enzyme technology to ensure all engines start easily and run smoothly, even after months of inactivity
• SAY GOODBYE TO ETHANOL-RELATED PROBLEMS - Prevents and cures most ethanol-related issues, including poor performance, rough idling, and decreased fuel economy, giving you peace of mind on the road or on the water
• MAXIMIZE FUEL ECONOMY - By removing and preventing gum, carbon deposits, and varnish build-up, Star Tron keeps your fuel delivery system clean, resulting in improved fuel economy
• WORKS FOR ALL ENGINES AND FUEL TYPES - Whether you have a car, boat, RV, or lawn mower, Star Tron works in all engines and all fuels, making it the ideal fuel treatment and stabilizer for any vehicle
• PREVENT WATER BUILD-UP - Helps prevent phase separation by dispersing water throughout fuel as submicron-sized droplets that are safely eliminated while the engine operates, keeping your engine running smoothly in humid or wet conditions

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SaleBestseller No. 3

STAR BRITE Star Tron Enzyme Fuel Treatment Concentrate, 8 Fl. Oz. – Treats up to 128 Gallons – Rejuvenate & Stabilize Old Gasoline, Cure Ethanol Problems, Improve MPG, Reduce Emissions

• UNLEASH YOUR ENGINE'S FULL POTENTIAL - Star Tron Enzyme Fuel Treatment uses advanced enzyme technology to ensure all engines start easily and run smoothly, even after months of inactivity
• SAY GOODBYE TO ETHANOL-RELATED PROBLEMS - Prevents and cures most ethanol-related issues, including poor performance, rough idling, and decreased fuel economy, giving you peace of mind on the road or on the water
• MAXIMIZE FUEL ECONOMY - By removing and preventing gum, carbon deposits, and varnish build-up, Star Tron keeps your fuel delivery system clean, resulting in improved fuel economy
• WORKS FOR ALL ENGINES AND FUEL TYPES - Whether you have a car, boat, RV, or lawn mower, Star Tron works in all engines and all fuels, making it the ideal fuel treatment and stabilizer for any vehicle
• PREVENT WATER BUILD-UP - Helps prevent phase separation by dispersing water throughout fuel as submicron-sized droplets that are safely eliminated while the engine operates, keeping your engine running smoothly in humid or wet conditions

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SaleBestseller No. 4

STA-BIL Small Engine Pro Multi-System Additive - Protects Against Ethanol - Cleans Carb And Injectors - Improves Engine Efficiency - Lubricates Valves And Pistons, 16 fl. oz. (22305) , Red

• Clean and improve your fuel system with Small Engine Pro, a gasoline/oil additive that helps restore lost engine power and performance, by cleaning out gum and varnish
• Keeps internal engine components lubricated and free, providing longevity to internal engine parts
• With optimal lubrication and cleaning, this formula effectively quiets noisy engines
• Protects Against Ethanol - Corrosion Inhibitors provide the ultimate protection against the harmful effects of Ethanol
• Safe for use in all gas powered small engine equipment including lawn mowers, trimmers, chainsaws, pressure washers, edgers, snow blowers, generators and more!

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SaleBestseller No. 5

STAR BRITE Star Tron Enzyme Fuel Treatment SEF Gasoline Formula - 1 oz. Treats 6 Gallons - 8 OZ (14308) Blue

• Makes engines start easily and run smoothly; improves MPG and reduces emissions
• Stabilizes fuel for up to 2 years and can help rejuvenate old, sub-spec fuel
• Cures and prevents ethanol fuel problems; helps prevent phase separation
• Cleans valves & injectors of carbon deposits, gums and varnish
• Small Engine Formula 14308 is safe for use in all engines (including 2-cycle pre-mix)

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SaleBestseller No. 6

Stanadyne Performance Formula Diesel Fuel Additive 2 Pack of 1/2 Gallon Jugs - Part # 38566

• Made in the U.S.A. Restores/Increase Horsepower.
• Reduces Fuel Consumption–tests show an average of 4% improvement in MPG and gains up to 9.6%
• Cetane Improver – improves combustion resulting in better engine starting, running & reduced noise
• Reduces Wear – lubricity improvers restore lubricity to ultra low sulfur diesel fuels
• Reduces Emissions – reduces Smoke and Particulates

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Bestseller No. 7

BIOBOR JF Diesel Fuel Additive: Highly Effective Fuel Biocide Supplement, Prevents Corrosion of Fuel Tanks, Increases Lubricity, Dual Phase Chemistry | 1 Gallon, 4-Pack, (BBJUG04US)

• KILLS & PREVENTS BACTERIA. Highly effective biocide to kill and prevent microbial growth in fuels and tanks (bacteria & fungi). Lubricates injectors and fuel pumps.
• DUAL PHASE CHEMISTRY. Partitions both water and fuel phases for more effective and complete protection against microbes that cause contamination and corrosion. Prevents corrosion of fuel tanks and metal components caused by the acidic by-products of microbial growth.
• EXTENDS FUEL FILTER LIFE. Excessive sludge accumulation, clogged fuel filters and expensive fuel polishing can shut down engines. Proactive use of a biocide prevents biomass accumulation in fuel tanks, extends fuel filter life and inhibits microbial influenced corrosion.
• INCREASES LUBRICITY. As an added benefit, BioborJF has been proven to increase the lubricity properties of jet fuel, providing additional protection and reduced wear to fuel delivery components.
• OEM APPROVED. Proven to restore lubricity levels, exceeding ASTM standards and protecting injectors and pumps from premature wear. (ASTM-D6079 HFRR- engine manufacturer and industry standard testing).

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Bestseller No. 8

Lucas Oil 10020-PK24 Fuel Treatment Additive - 5.25 oz, (Pack of 24)

• Cleans and Lubricates Fuel System: The product contains a blend of detergents and additives that help to clean and lubricate the fuel system, including the fuel injectors, carburetor, and combustion chamber.
• Improves Fuel Economy: The product can help to improve fuel economy by removing deposits and contaminants from the fuel system and improving the efficiency of fuel combustion.
• Reduces Emissions: By improving fuel combustion, the product can also help to reduce exhaust emissions, including harmful pollutants such as carbon monoxide and nitrogen oxides.
• Increases Power and Acceleration: The product can also help to increase power and acceleration by improving the flow of fuel through the system and reducing the buildup of deposits that can impede engine performance.
• Neutralizes Low Sulfur Fuel Problems: Lucas Oil 10013 Fuel Treatment contains a blend of detergents and additives that help to neutralize sulfur and other harmful contaminants that may be present in the fuel system. The detergents work to clean the fuel injectors and carburetor, which can become clogged with sulfur deposits over time.

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Bestseller No. 9

Stanadyne Performance Formula Diesel Fuel Additive - 16 Oz. Case of 12

• Restores/Increase Horsepower: detergents clean deposits in the injection system
• Reduces Fuel Consumption tests show an average of 4 percent improvement in MPG and gains up to 9.6 Percent
• Cetane Improver improves combustion resulting in better engine starting, running and reduced noise
• Reduces Wear: Lubricity improvers restore lubricity to ultra low sulfur diesel fuels
• Reduces Emissions reduces Smoke and Particulates

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Bestseller No. 10

zMAX 58-011 - Engine & Fuel Formula Kit - Easy to Use - Reduces Carbon Build-Up & Lubricates Metal Extending Life of Car or Truck - Runs Efficiently, Improving Gas or Diesel Mileage - 12 oz. - 2 Pack

• EXTEND THE LIFE OF YOUR VEHICLE: zMAX Engine & Fuel formulas are simple and easy to use. Micro-lubrication soaks into metal surfaces, which improves lubricity and reduces carbon deposit build-up while boosting performance and protecting vital vehicle parts.
• ENGINE EFFICIENCY: Add zMAX Engine Formula to gain efficient combustion resulting in more power. Use the engine treatment at your routine oil change or every 6k miles to reduce engine wear, lower emissions and keep your engine running smoothly.
• FUEL CONDITIONER: Pour zMAX Fuel Formula in the fuel tank to lubricate and maintain a clean fuel injector system. It conditions the pumps and nozzles reducing carbon residue from the valves and pistons while improving fuel efficiency and performance.
• TRUSTED BY PROFESSIONALS & DEALERSHIPS: Stock zMAX in your garage to treat your car like a professional. From local repair shop mechanics to major car dealership groups, our formula is road tested and mechanic trusted. zMAX is eco-friendly and USA-Made.
• REPUTABLE QUALITY AND PERFORMANCE: zMAX is proud to be the Official Micro-lubricant of Speedway Motorsports. Proven and trusted for over 80 years, zMAX helps save money at the pump and extends your engine’s life.

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Last update on 2023-06-06 / Affiliate links / Images from Amazon Product Advertising API

How to find the best fuel additive for small engines?

Here, we’ll be going over a number of factors that you can use to ensure that you’re purchasing the best fuel additive for small engines for you.

Regardless of which type of item you’re looking to buy, chances are that there are existing buying guides on the internet, all of which aim to give you good fuel additive for small engines recommendations.

Despite these recommendations, however, it’s always a good idea to do your own research. In addition to this research, asking yourself the following questions is also super helpful:

• What features does the fuel additive for small engines need to have to be perfect for my needs?
• What is my budget?
• Do I need to purchase a certain brand?

Once you’ve answered these questions and have a good idea of what you’re looking for and the buying process becomes much easier. Keep in mind that when looking for the best product, there’s no need to rush. In fact, very rarely are the ideal products found by choosing the first one you see or by basing your decisions on only one factor. Take your time and enjoy the process!

Now, with the answers to the previous questions in mind, we urge you to use our upcoming buying guide for fuel additive for small engines to find what you’re looking for:

Brand

In some cases, the brand of fuel additive for small engines is very important. For example, if you’re looking for an item that works in tandem with another, you might very well need both products to be the same brand. If this is the case, it’s vital to pay attention to this factor, as choosing the wrong product can mean the difference between wasting your money and buying a great product that functions as it should.

Features

The features in any given fuel additive for small engines are important because they can dictate which version of an item you need and how much money you need to spend. Consider all the key features that you want your item to have and don’t settle for anything that doesn’t check at least ¾ of your boxes.

Reviews

Customer reviews about fuel additive for small engines are crucial – especially when you’re buying a product that costs a lot of money or serves a big importance. Luckily, most products can be found online, which means that it’s common for there to be scores of customer reviews from those who have already purchased any given product.

Pay attention to these reviews. Take note of the pros and cons that they mention, and factor these into your big decision. In some cases, you’ll be forced to sacrifice one con in order to gain a particular pro, but being aware of the potential con is going to be beneficial in either case.

Quality

Of course, quality is key. You don’t want to purchase a low-quality product. If you do, you run the risk of your item breaking, not working properly, or otherwise proving to be very disappointing, as well as a waste of money.

You can compare fuel additive for small engines quality by researching what your potential purchases are made from, contrasting the individual items against each other to discern which one is made of the best materials.

Warranty

Warranty isn’t always going to be important, but it definitely can be. This is especially true if the item in question is tech-related or expensive. A good warranty will be valid for an extended time after purchase and cover a variety of problems ranging from item defects to random accidents, water damage, and other miscellaneous events that could ruin your product.

Conclusion

The quest to find the best fuel additive for small engines can be daunting – but it doesn’t have to be. It can be made much easier by asking yourself a few simple questions and then thinking critically about the items you want to buy. Consider their features, quality, brand, warranty, and customer reviews and you’re more likely to make a great purchase.