We consider a 2 stroke outboard fuel additive to be a worthy investment in the long run. In the following post, we will help you to select the best 2 stroke outboard fuel additives.

Our review process: Show/Hide

Our Top Picks:

Best Overall: Buy: Yamaha Shock Treatment READ REVIEW

Best With Fuel Mileage: Buy: Star Brite 2 Stroke Outboard Fuel Additive READ REVIEW

Best For Older Engine: Buy: Yamaha 2 Stroke Outboard Fuel Additive READ REVIEW

Best For Old Gas: Buy: Star Brite Great Treatment READ REVIEW

Best For Snow Blowers: Buy: Stabil 2 Stroke Outboard Fuel Additive READ REVIEW

Best For Cylinder Heads: Buy: Mercury Marine Mercruiser 2 Stroke Outboard Fuel Additive READ REVIEW

Best For Complete Combustion: Buy: Fuel Ox 2 Stroke Outboard Fuel Additive READ REVIEW

Best Overall: Yamaha Shock Treatment

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Not everyone likes to purchase additives for their daily usage, but the Yamaha Shock Treatment would be an anomoly. The yamaha shock treatment is used for golf carts and it is bought here. Make sure this fits by entering your model number. In addition, the additive protects silver solder, copper, aluminum, and steel in a fuel system from the corrosive affects of ethanol sulfate salt.

Above all, the yamaha shock treatment is designed for a great price, is perfect for a good deal and it is made for very good stuff.

Most buyers opine that the additive includes a stabilizer so there's no need to add additional stabilizer, sta-bil or otherwise. In addition, a few say that the additive is hands down the best fuel additive you can use. Therefore, buyers were eager to recommend it to friends and families.

• This provides for better gas mileage, make sure and it is great for gas mileage.
• It is easy to order from amazon.com.
• This will work well on boats as well.
• This can be used in a 25hp yamaha motor for 11 years.

Best With Fuel Mileage: Star Brite 2 Stroke Outboard Fuel Additive

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Not everyone likes to purchase additives for their regular usage, but the Star Brite 2 Stroke Outboard Fuel Additive would be an anomoly. The star brite 2 stroke outboard fuel additive is great for engine light and it is great for fuel pump. Make sure this fits by entering your model number. Moreover, this allows all engines to start easily and run smoothly, even when using ethanol-blended fuel or after sitting idle for months.

The additive has replaced the fuel filter and it is for pressure washers. In addition, the additive works as intended and it is designed for regular gas. Lastly, the star brite 2 stroke outboard fuel additive is safe for all engines, will not harm oxygen sensors, and overdosing is not harmful.

Almost all buyers found that the additive is worth every penny and cheaper than mechanics too. Also, a few strongly agree that the additive is used for long term and short term storage of fuel. Moreover, they say that this is by far the best fuel treatment for outboard ( marine environment in general ) motors using ethanol additive gasoline.

• This makes old gas good again.
• Take notice that there are different concentrations of startron enzyme fuel treatment.
• This is the best stuff on the market.
• This is perfect for heavy loads and it has increased mpg.

Best For Older Engine: Yamaha 2 Stroke Outboard Fuel Additive

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The Yamaha 2 Stroke Outboard Fuel Additive is capable of outshining several other additives featured in this list in overall features for the price point. The yamaha 2 stroke outboard fuel additive is great for a great price and it allows for better fuel economy. Use with yama lube fuel stabilizer and conditioner plus to prevent any harmful effects. These deposits are caused by poor fuel quality.

Most importantly, the yamaha 2 strokeoutboard fueladditive is for gasoline engine and it is great for shelf life.

Almost all customers opine that the additive is as good as everyone says. Moreover, they say that the additive is 1oz per 10 gallons of gasoline...jyst read the back of the bottle, it will tell you. Moreover, a few strongly agree that the additive is one of the best products out there. In conclusion, the tone of buyers is very positive and we believe that the additive suits the purpose.

• These are before the slippage and the engine sounds great.
• This is a great item, give it a try and it has more power.
• They are clean. no more black soot.
• This is safe for motor cycling.

Best For Old Gas: Star Brite Great Treatment

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We know from years of feedback from readers, amazon sellers, and family and friends what most people want in a convenient and appropriate additive. The Star Brite Great Treatment is exactly that - it's a simple additive that hits all the right notes. The star brite great treatment is easy to use and it is highly recommend. Star tron enzyme fuel treatment concentrated formula #930xx is economical to use in large and small applications. 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.

The additive is great for engine light, provides better gas mileage and it works well for snow blower.s. Moreover, it is made with fuel tanks and it is designed for fuel lines. Finally, the star brite great treatment is safe for all engines, will not harm oxygen sensors, and overdosing is not harmful.

Almost all buyers found that the additive is a great treatment for gas in vehicles, RV'S and generators. In addition, they say that the additive is the best gas treatment for environmental problems and the long life of the gas when in storage. Moreover, they say that the additive can not believe how good readings are.

• This is best for treating ethanol gasoline.
• This filled the tank and it worked as advertised.
• It is hard to cleanly pour and measure.
• This is great for older automotive engines that aren't updated for ethanol.

Best For Snow Blowers: Stabil 2 Stroke Outboard Fuel Additive

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We know from years of feedback from readers, amazon sellers, and family and friends what most people want in a convenient and appropriate additive. The Stabil 2 Stroke Outboard Fuel Additive is exactly that - it's a simple additive that hits all the right notes. The stabil 2stroke outboardfuel additive made in the u. s. a. The manufacturer says: We love our boats, cars and outdoor power equipment not just for what they are, but for where they take us. This additive was designed specifically to treat small engines having a little trouble running.

The additive is compatible with all gasoline small engine equipment. Lastly, the stabil 2 stroke outboard fuel additive is worth the money, is blue and it has tried new filters.

Almost all customers agree that the additive can certainly be used with sta-bil brand at the same time. And, a few also found that the additive is an excellent small engine fuel system cleaner. In addition, they strongly agree that the engine treatment in this review is designed to neutralize the harm from ethanol deposited, and clean the gasoline path of the motor.

• These make for great gas and it works with real money.
• This is good for use up to 2 years after the bottle was opened.
• This is good for shelf life and it started right up.
• This can be used on larger engines, results may vary.

Best For Cylinder Heads: Mercury Marine Mercruiser 2 Stroke Outboard Fuel Additive

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Compared with other additives in this category, the Mercury Marine Mercruiser 2 Stroke Outboard Fuel Additive has a convenient design. The mercury marine mercruiser 2 stroke outboard fuel additive is highly recommended and it runs great. Make sure this fits by entering your model number. Further, the additive is best for customer service and it has changed fuel filters.

The additive has followed the instructions and it starts right up. Finally, the mercury marine mercruiser 2stroke outboardfuel additive is good for chain saws and it makes sure.

Most customers opine that the additive is great for keeping outboards free of carbon buildup. In addition, they strongly agree that the additive is packaged in a metal container. Overall, many customers have used the mercury marine mercruiser 2 strokeoutboard fueladditive for more than a few months without any complaints, and it shows no sign of giving up.

• Use with mercury quickstor and mercury quickare.
• This is the best additive for any 2 - stroke motor on the market.
• This is good for two fill ups.
• Prevent engine knocking and pistons seizing up.

Best For Complete Combustion: Fuel Ox 2 Stroke Outboard Fuel Additive

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The Fuel Ox 2 Stroke Outboard Fuel Additive is satisfactory and appropriate and fits well with your daily use. The fuel ox 2 stroke outboard fuel additive is not your average fuel treatment. Fuel ox marine is your perfect winterizer as it also contains stabilizers that keep fuel from degrading for up to two years. These military grade additives are highly concentrated and improve combustion and overall engine performance.

Above all, the fuel ox 2 stroke outboard fuel additive has a highly concentrated formula that treats both gas and diesel for a small and convenient inventory.

One customer says - "worked wonders for my fuel system. ". Almost all buyers found that the additive is used to mean removing and a full cleaning of the carb. Without any doubt, this product passed the test and had very satisfied buyers eager to share their experience.

• This is perfect for high quality and it works better.
• This starts better and it is designed for more power.
• This can also degrade fuel and cause costly repairs and maintenance to the engine.
• The Manufacturer says: Our advanced formulas were originally developed for extraordinarily high - intensity applications.