If you’re looking for the best fuel treatment for outboard motors to buy online, you’ve come to the right place. Our team has spent a considerable amount of time researching and physically reviewing the fuel treatment for outboard motors, so you can be sure to get the detailed insights you need to make the best decision for your purchase.

Best fuel treatment for outboard motors

10 Best fuel treatment for outboard motors Reviews

SaleRank No. 1
Fuel Ox Marine - Complete Fuel Treatment and Combustion Catalyst - Fuel Additive for Gas or Diesel -...
  • ✔ 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.
Rank No. 3
Star Tron Enzyme Fuel Treatment - Concentrated Formula 32 oz - Treats 512 Gallons
  • ENZYME FUEL TREATMENT – Star Tron Enzyme Fuel Treatment Concentrate improves the combustibility of all fuel - meaning more power and better fuel economy. It keeps working to clean your fuel delivery system, so your engines start easily and run strong.
  • STABILIZES FUEL FOR UP TO 2 YEARS – This fuel additive is ideal for everyday use and seasonal storage. It can stabilize fuel for up to 2 years and can help rejuvenate old, sub-spec fuel.
  • MAX PERFORMANCE – This gasoline stabilizer helps improve MPG, eliminate black soot and exhaust stains, reduce emissions, remove carbon build-up, and eliminate and prevent ethanol fuel problems for maximum performance.
  • VERSATILE – This revolutionary fuel stabilizer utilizes enzyme technology to enhance the performance of boats, automobiles, trucks, RVs, tractors, farm equipment, generators, lawnmowers, lawn equipment, oil burning furnaces and all other small engines.
  • SAFE FOR ALL ENGINES – Star Tron Enzyme Fuel Treatment concentrated formula #930XX is economical to use in large and small applications. It works with ethanol fuel and is safe for use in all engines (including 2-cycle pre-mix).
Rank No. 4
Stens 770-176 Sta-Bil Marine Formula Fuel Stabilizer Size 8 oz
  • Specs: Sta-Bil Marine Formula Fuel Stabilizer, Size: 8 oz, Notes: 1 oz. treats 10 gallons of fuel 8 fl. oz. bottle treats 80 gallons of fuel, Double the corrosion prevention and 4 times the fuel system cleaner as regular Sta-Bil, Extra corrosion protection and fuel system leaning, Recommended for ethanol blends, Recommended to be used at every fill up, not just for seasonal storage, Safe to use in all lawnmowers, tractors, trimmer and all outdoor power equipment
  • Stens one-year warranty ensures reliability and performance for every part.
  • Stens branded parts are trusted by professional dealers to perform OEM quality repairs. The Stens name is featured on all Genuine Stens product packaging.
Rank No. 5
STAR BRITE Star Tron Ring Clean Plus Deposit Control - Gasoline Stabilizer + Fuel Injector Cleaner -...
  • Improves fuel combustibility to keep engines clean and operating at peak performance levels
  • Ideal for removing deposits caused by regular gas and ethanol-blends
  • Keeps carburetors, fuel injectors, intake ports and combustion chambers clean
  • Works in all gas engines
  • Treats up to 160 gallons (600 liters) of gasoline
Rank No. 6
Mercury Marine/Mercruiser Quickare Fuel Treatment, 12 Ounces 92-8M0047930
  • Keeps your fuel fresh for up to three months
  • Sold Each
  • Please verify your own fitment
  • item package weight: 8.0 pounds
Rank No. 7
STAR BRITE Star Tron Enzyme Fuel Treatment SEF Gasoline Formula - 1 oz. Treats 6 Gallons - 8 OZ...
  • 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)
Rank No. 8
STA-BIL Storage Fuel Stabilizer - Guaranteed To Keep Fuel Fresh Fuel Up To Two Years - Effective In...
  • Keeps fuel fresh for up to 24 months during storage
  • Eliminates the need to drain fuel prior to storage
  • Ensures quick, easy starts after storage
  • Prevents gum and varnish build-up
  • Effective in all gasoline, including Ethanol blends
SaleRank No. 9
YAMAHA ACC-RNGFR-PL-12 Yamalube Ring-Free Fuel Additive
  • Improves power and efficiency in two and four stroke engines
  • Removes and prevents carbon and varnish deposits from injectors, carburetors, intake valves, intake ports and combustion chambers
  • Fights corrosive elements of sulfur in Ethanol blended fuels
  • Use with Yama lube Fuel Stabilizer and Conditioner PLUS to prevent any harmful effects
Rank No. 10
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
Rank No. 11
STAR BRITE Star Tron Enzyme Fuel Treatment - Concentrated Gasoline Formula - 1 oz. Treats 16 Gallons...
  • For everyday use and seasonal storage; 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
  • Makes engines start easily and run smoothly; improves fuel economy and reduces emissions
  • Cleans valves and injectors of carbon deposits, gums and varnish for maximum performance, increased fuel efficiency and reduced emissions
  • Concentrated formula #930XX is economical to use in large and small applications; safe for use in all engines (including 2-cycle pre-mix)
Rank No. 12
STAR BRITE Star Tron Enzyme Fuel Treatment SEF Gasoline Formula - 1 oz. Treats 6 Gallons - 1 OZ Twin...
  • Cures and prevents ethanol fuel problems; helps prevent phase separation
  • For everyday use and seasonal storage; stabilizes fuel for up to 2 years and can help rejuvenate old, sub-spec fuel
  • Makes engines start easily and run smoothly; improves fuel economy and reduces emissions
  • Cleans valves and injectors of carbon deposits, gums and varnish for maximum performance, increased fuel efficiency and reduced emissions
  • Small Engine/Automotive Formula 143XX is easy to mix in fuel tanks under 48 gallons; safe for use in all engines (including 2-cycle pre-mix)

We hope that this article has helped you choose the best fuel treatment for outboard motors for yourself. If you’re still not convinced with the top picks, then you can also check out fuel treatment for outboard motors. Lastly, if you still can’t find what you’re looking for, then contact us with your requirements and someone from the team will get back to you with an appropriate option.

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