Best Marine Fuel Additive in 2023: Our Top 10 Picks

Sometimes it might be quite difficult to find the best marine fuel additive. 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 marine fuel additive buying guide.

Our 10 Recommendations:

#	Preview	Product
1		STA-BIL 360 Marine Ethanol Treatment & Fuel Stabilizer - Prevents Rust and Corrosion, Helps Clean...	Check Price
2		Sea Foam SF-16-2PK Motor Treatment Multi-Use, 16 Ounce, Pack of 2, 16. Fluid_Ounces	Check Price
3		STAR BRITE Star Tron Enzyme Fuel Treatment - Concentrated Formula 32 oz - Treats 512 Gallons	Check Price
4		Quicksilver 8M0047921 Quickleen Engine & Fuel System Cleaner, 12 Oz.	Check Price
5		Mercury Quickare Fuel Treatment Additive - ‎8M0047920	Check Price
6		Mercury Marine Quickleen Engine and Fuel System Cleaner, 12 Ounces 92-8M0047931	Check Price
7		Marine Formula STA-BIL Fuel Stabilizer (32 oz.)- Sold in pack of 6	Check Price
8		Bell Performance - Marine Dee-Zol Treatment for Marine Diesel Fuel - Case (4-1 Gal.) - Save 20%	Check Price
9		STAR BRITE Star Tron Enzyme Fuel Treatment - Concentrated Formula 32 Ounce - Treats 512 Gallons	Check Price
10		SENECA Marine Yamaha Yamalube Boat & Outboard Fuel Treatment Combo Kit - 1 - ACC-RNGFR-PL-32 Ring...	Check Price

Best Marine Fuel Additive Reviews:

SaleBestseller No. 1

STA-BIL 360 Marine Ethanol Treatment & Fuel Stabilizer - Prevents Rust and Corrosion, Helps Clean Fuel System For Improved In-Season Performance, Treats Up To 320 Gallons, 32oz (22240) , Blue

• PREVENTS CORROSION – STA-BIL 360 Marine Ethanol Treatment & Fuel Stabilizer is the ultimate treatment and protection against ethanol blended fuels. This formula contains PEA fuel system cleaners, and it removes water from your gas tank which prevents gum, varnish, rust, and corrosion from appearing
• IMPROVES PERFORMANCE – By combating the effects of harsh marine climates, this fuel additive helps to clean your fuel system. With gasoline pumping through your engine, it is imperative to use this fuel treatment in fresh gas at every fill up in order to ensure your engine is operating at peak performance
• VERSATILE – STA-BIL 360 Marine is an alcohol-free water remover that is very concentrated, and the 32 oz. bottle can be used to treat up to 320 gallons of fuel. This marine fuel stabilizer keeps fuel fresh up to 12 months, and it is safe for use in your boat, jet ski, and every gasoline-powered watersport engine
• DIRECTIONS – Bottle Directions: To measure small quantities: remove small cap and seal (on long neck), squeeze bottle to desired level, and pour. To measure large quantities: remove large cap and seal, pour (measurements on bottle side). Usage Directions: 1 oz (30 mL) treats up to 10 gallons (38 L) of fuel. Recommended for use at every fill up in season for year-round performance and protection
• All STA-BIL branded products are good for use up to 2 years after the bottle was opened. Be sure to mark the date you opened the bottle on the back of your package!

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Bestseller No. 2

Sea Foam SF-16-2PK Motor Treatment Multi-Use, 16 Ounce, Pack of 2, 16. Fluid_Ounces

• Dissolves and clean fuel deposits and sticky residues from gas and diesel fuel injectors, carburetors, and combustion chambers
• Package dimensions :5.0" L x5.0" W x8.25" H
• Does NOT have harsh detergent or abrasive chemicals that can harm your engine
• Country of origin :United States

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Bestseller No. 3

STAR BRITE Star Tron Enzyme Fuel Treatment - Concentrated Formula 32 oz - Treats 512 Gallons

• 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

Quicksilver 8M0047921 Quickleen Engine & Fuel System Cleaner, 12 Oz.

• Gas treatment and injector cleaner for use with all grades of gasoline and ethanol-blend fuel
• Quickly and thoroughly removes carbon deposits from carburetors, injectors, intake valves, spark plugs, piston crowns and cylinder heads
• Prevents engine knocking and piston seize-up
• Extends spark plug life
• Can be used at every fuel tank fill-up. One ounce treats five gallons of gasoline

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SaleBestseller No. 5

Mercury Quickare Fuel Treatment Additive - ‎8M0047920

• Maximizes engine performance with all grades of gasoline, including ethanol-blend fuel
• Removes varnish and gum deposits from fuel lines, tanks, carburetors, injectors, intake valves and spark plugs
• Help control corrosion, gum and varnish build-up and phase separation associated with ethanol-blended gasoline
• Helps keep fuel fresh for up to three months
• Can be used at every fuel tank fill-up. One ounce treats 10 gallons of gasoline

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SaleBestseller No. 6

Mercury Marine Quickleen Engine and Fuel System Cleaner, 12 Ounces 92-8M0047931

• Quickly and thooughly remove carbon deposits from carberators and injectors, intake valves, spark plugs, piston crowns & cylinder heads
• Prevent engine knocking and piston seize up
• Extend spark plug life
• Use with Mercury Quickstor and Mercury Quickare

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SaleBestseller No. 7

Marine Formula STA-BIL Fuel Stabilizer (32 oz.)- Sold in pack of 6

• Sold in pack of 6
• Gets rid of Corrosion from ethanol-induced water attraction, and condensation from temperature changes
• Also gets rid of Fuel System Deposits from ethanol acting as a solvent on accumulated deposits, causing engine performance problems
• Ships By Truck & A Daytime Phone # Is Needed For Delivery...

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Bestseller No. 8

Bell Performance - Marine Dee-Zol Treatment for Marine Diesel Fuel - Case (4-1 Gal.) - Save 20%

• Case (4 - 1 Gal.) - SAVE 20%
• Marine Dee-Zol Fuel Additive for Marine Diesel Fuel

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Bestseller No. 9

STAR BRITE Star Tron Enzyme Fuel Treatment - Concentrated Formula 32 Ounce - Treats 512 Gallons

• 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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Bestseller No. 10

SENECA Marine Yamaha Yamalube Boat & Outboard Fuel Treatment Combo Kit - 1 - ACC-RNGFR-PL-32 Ring Free Plus Fuel Additive & 1- ACC-FSTAB-PL-32 Fuel Stabilizer Plus

• Great for ALL Yamaha Boats, ATVs, Outboards, WaveRunners, Power Products, Generators, Pressure Washers, SxS, Golf Carts & More
• Kit includes 1 - ACC-RNGFR-PL-32 Ring Free Plus Fuel Additive & 1- ACC-FSTAB-PL-32 Fuel Stabilizer Plus
• Keep your YAMAHA running great by properly maintaining the fuel system
• Ensure Peak Performance with Genuine Yamaha OEM Parts
• Purchase together & SAVE!

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Last update on 2023-05-28 / Affiliate links / Images from Amazon Product Advertising API

How to find the best marine fuel additive?

Here, we’ll be going over a number of factors that you can use to ensure that you’re purchasing the best marine fuel additive 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 marine fuel additive 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 marine fuel additive 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 marine fuel additive to find what you’re looking for:

Brand

In some cases, the brand of marine fuel additive 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 marine fuel additive 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 marine fuel additive 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 marine fuel additive 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 marine fuel additive 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.