It is always difficult when it comes to decide and making final call choosing ethanol treatment for outboard motors, hence we are here today so be sure to check the product reviews that will solve your confusion and save time. Reviews are a great way to find out if the product is right for you and whether it has any design flaws. If there are multiple bad reviews, you may want to look at other products. Negative reviews can tell you a lot about the product, including things you may not have thought to consider. They can tell you about any potential issues with the product. They can also tell you about issues with the manufacturer’s customer service. To help you out, we’ve collected reviews of what we think are the ethanol treatment for outboard motors this year. Before you proceed with anything, read through our thoughts on the top ethanol treatment for outboard motors, as well as an overview of what you need to know when considering your buying
In this in-depth review guide, we will discuss about the best ethanol treatment for outboard motors.
The Best ethanol treatment for outboard motors
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STA-BIL 360 Marine Ethanol Treatment & Fuel Stabilizer - Prevents Rust and Corrosion, Helps Clean...
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The Best ethanol treatment for outboard motors
Star Tron Enzyme Fuel Treatment - Concentrated Formula 32 oz - Treats 512 Gallons
$24.99
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5 used from $23.55
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as of August 14, 2025 9:44 am
Features
- ALL-ROUND ENGINE SOLUTION - Works in all engines and all fuels, making it the ideal fuel treatment and stabilizer for any vehicle or gas powered tool
- ETHANOL PROBLEM SOLVER - Prevents and cures most ethanol-related issues, including poor performance and decreased fuel economy
- OLD FUEL REVITALIZER - Stabilizes fuel up to 2 years and can help rejuvenate old, sub-spec fuel, even after months of inactivity
- FUEL ECONOMY MAXIMIZER - Removes and prevents gum, carbon deposits, and varnish build-up, resulting in improved fuel economy
- WATER BUILD-UP PREVENTION - Disperses water throughout fuel as submicron-sized droplets that are safely eliminated while the engine operates
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
$23.22
in stock
73 new from $23.21
1 used from $21.09
1 used from $21.09
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as of August 14, 2025 9:44 am
Features
- FUEL SYSTEM CLEANER: Cleanses the entire fuel system using PEA additives, including fuel injectors, lines, & fuel pumps. This advanced formula removes water, gum, and varnish, ensuring optimal performance & longevity of your fuel system while preventing corrosion.
- CORROSION PROTECTION: Industry-leading rust and corrosion protection & designed for in-season cleaning & the protection of internal fuel system parts.
- PERFORMANCE BOOSTER: Designed to optimize fuel performance which contributes to enhanced gas mileage & improved engine power. This advanced formula cleans & protects the fuel system, allowing for efficient combustion & prolonged engine life.
- DIRECTIONS: Pour directly into fuel tank prior to fill up. Use 1 oz for every 10 gallons of fuel. Run the engine for 5 minutes to treat the entire fuel system.
- YEAR-ROUND PROTECTION: Pair STA-BIL In-Season Marine Protection with STA-BIL Storage, providing a complete solution for both in-season operation & storage needs during the winter ensuring that your watercrafts remains in peak condition year-round.
Mercury Quickare Fuel Treatment Additive - 8M0047920
$19.99
in stock
7 new from $15.41
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as of August 14, 2025 9:44 am
Features
- Maximize engine performance with all grades of gasoline and ethanol blends
- 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
- Can be used at every fuel tank fill-up — 1 ounce treats 10 gallons of gasoline
- Manufacturer part number 8M0047920
Quicksilver 8M0047921 Quickleen Engine & Fuel System Cleaner, 12 Oz.
$14.99 in stock
11 new from $13.54
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as of August 14, 2025 9:44 am
Features
- 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
- Can be used at every fuel tank fill-up — 1 ounce treats 5 gallons of gasoline
- Manufacturer part number 8M0047921
Fuel Ox Marine - Complete Fuel Treatment and Combustion Catalyst - Fuel Additive for Gas or Diesel - For Inboard or Outboard Motors - Treats Fuel For Boats or Jet Skis - Treats 625 Gallons -8oz Bottle
$38.99
in stock
2 new from $38.99
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as of August 14, 2025 9:44 am
Features
- INCREASES FUEL ECONOMY : Fuel Ox Marine contains a patented combustion catalyst that provides a more complete combustion. This allows for more productive burn of fuel.
- PROTECTS AGAINST ETHANOL : Fuel Ox Marine coats fuel tank and system to prevent corrosion from ethanol found in gasoline.
- REMOVES WATER : Fuel Ox Marine is a demulsifier for the water that is in fuel. It will separate the water suspended in gas or diesel and filter out through your boat's or watercraft's racors, separators, or filters. It prevents water from passing through engine and significantly slows the process of phase separation.
- BOOSTS POWER : Fuel Ox Marine contains a patented combustion catalyst that provides a more complete combustion. This more complete burn allows for more BTUs to be burned increasing octane two points and increasing the power of the boat or watercraft.
- 1OZ TREATS UP TO 80 GALLONS OF GAS OR DIESEL : Fuel Ox Marine has a highly concentrated formula that treats both gas or diesel for a small and convenient inventory.
Lucas Oil 10576 Safeguard Ethanol Fuel Conditioner with Stabilizers - 16 Ounce
$10.45 in stock
40 new from $10.45
1 used from $12.67
1 used from $12.67
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as of August 14, 2025 9:44 am
Features
- Cleans injectors, valve seats, combustion chambers and other critical fuel components
- Stabilizes fuel and prevents varnish & gum formation in ethanol and gasoline
- Combats deposits and protects your engine oil lubricants from the harmful effects of alcohol combustion
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
$9.99
in stock
3 new from $9.99
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as of August 14, 2025 9:44 am
Features
- 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!
Mercury Marine Quickleen Engine and Fuel System Cleaner, 12 Ounces 92-8M0047931
$18.53 in stock
8 new from $18.53
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as of August 14, 2025 9:44 am
Features
- Quickleen For use as needed throughout the boating season
- Aggressive cleaners work to quickly and thoroughly remove carbon deposits from carburetors and injectors, intake valves, spark plugs, piston crowns, and cylinder heads
- Prevents engine knocking and piston seize-up as well as Extends spark plug life
- Superseded From: 92-858073K01
- 1 ounce treats 5 gallons - 12 ounce bottle treats 60 gallons
STA-BIL Fast Fix - Small Engine Treatment, Cleans Carburetors and Injectors, Fixes Rough Running Engines, Eliminates Water, Treats Up to 20 Gallons, 8oz (22304) , Green
$9.99 in stock
12 new from $9.91
Free shipping
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as of August 14, 2025 9:44 am
Features
- FIXES ROUGH RUNNING ENGINES – STA-BIL Fast Fix eats away at gum and varnish that cause rough starts and no starts in your small engine equipment. This easy-to-use fuel additive combats the effects of ethanol blended gasoline
- ELIMINATES WATER – This fuel injector cleaner helps to remove water that may get into your fuel system. Penetrating deep into the fuel line, this simple fuel additive prevents the need to disassemble the engine. The 8 oz. bottle of this alcohol-free fuel additive treats up to 20 gallons of fuel
- VERSATILE – Compatible with all small engines, adding STA-BIL Fast Fix to your 2-cycle or 4-cycle small engine cleans carburetors and injectors while acting as a water remover. Use this product in your lawn mower, chainsaw, trimmer, snow blower, generator, and more
- DIRECTIONS – For rough running engines use 1 oz. of STA-BIL Fast Fix per 2.5 gallons of fuel. Fill with fresh gas. Start the engine and allow to run for 15 minutes to allow the additive to work its way through the fuel system. If the engine does not start, attempt to turn it over a few times so the additive makes its way through the fuel system and allow to sit overnight. Attempt to start again, if problems persist you may need to have it looked at by a mechanic
- 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!
Lucas LUC10013 Fuel Treatment - 1 Gallon
$31.44
in stock
42 new from $29.99
Free shipping
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as of August 14, 2025 9:44 am
Features
- The world’s #1 fuel additive for both gasoline and diesel engines
- A great tune-up in a bottle – treats gasoline, diesel fuel and increases MPG
- Cleans and lubricates the fuel system, including fuel injectors, carburetor and combustion chamber
- Improves fuel economy by burning excess exhaust emissions
- Increases power and acceleration by improving fuel flow and reducing deposit buildup
The Video Review of Best ethanol treatment for outboard motors
The Verdict
Our best overall ethanol treatment for outboard motors, the Perception and the reviews helps assist to choose you the product better. We hope our reviews buyer guide of these ethanol treatment for outboard motors will help you pick the perfect ethanol treatment for outboard motors for you and your buying decision making.