Answer: Fuels containing up to 10 percent ethanol are considered acceptable for use in Mercury engines. Fuels containing higher levels of ethanol, such as E15 gasoline, are not considered acceptable for use.
Full Answer
What is the ethanol content of fuel in Mercury outboard engines?
Fuel system components of Mercury Outboard and Sterndrive Engines can and will withstand up to 10% Ethanol content in gasoline The best advice we have for customers is to empty the fuel tanks for long term storage.
What is the best ethanol treatment for boats?
For a thorough ethanol treatment for boats and a remarkable boost in performance, you’d be hard-pressed to find a product that delivers as much quality and bonafide results as this one. 4. Star Brite 14308 Star Tron Enzyme Fuel Treatment
How much quieter is a Mercury 115 fourstroke?
The Mercury 115 FourStroke is quieter than a competitive 115hp four-stroke across the rpm band. At idle, the Mercury is four decibels quieter than the competition – the competitive outboard is 25% louder. At cruising speed, where normal conversations occur, the competitive outboard generates almost 15% more noise.
What type of fuel should I use in my boat motor?
For marine engines, gas with 10% ethanol or less is recommended. Ethanol fuel in boat motors can put a quick damper on your weekend plans. One of the unfortunate characteristics of ethanol is that it attracts and absorbs water.
What is Yamaha's fuel stabilizer?
How much filtration does a Yamaha filter have?
Is ethanol a solvent?
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What is best gas treatment for outboard motors?
The Best Marine Fuel StabilizersLucas LUC10013 Fuel Treatment.Quicksilver 8M0047922 Quickstor Fuel Stabilizer.PRI 32-D Fuel Stabilizer.Gold Eagle 22240 Sta-Bil Ethanol Fuel Treatment.Mercury Marine Quickstor Fuel Stabilizer.Yamalube Fuel Stabilizer and Conditioner Plus.The Fuel Ox Marine Winter Shock.More items...•
Should I use premium gas in my 4 stroke outboard?
Putting lower-octane gas in a high-performance motor rated for premium gasoline may cause that motor to knock. Obviously, you don't want that. But putting high-octane gas in a regular outboard won't do a thing except lighten your wallet. It will not give you any more power.
What is the best fuel for a Mercury 4 stroke?
98 unleaded gasoline98 unleaded gasoline is the best choice for a Mercury 4-stroke boat engine.
Should I run premium gas in my outboard?
Current recommendations are to use a minimum of 87 octane, 89 octane is preferred. There is no additional benefit from using higher-octane fuels, in fact they may cause hard starting conditions in hot weather.
What octane is in Mercury 4 stroke outboard?
87 OctaneSpecifications - 90HP / kW90 / 67Recommended fuelUnleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol MaximumRecommended oilMercury FourStroke Oil 10W-30Engine protection operator warning systemSmartCraft Engine GuardianCompatible with SmartCraft digital technologyYes27 more rows
What fuel should I run in my Mercury outboard?
Answer: Fuels containing up to 10 percent ethanol are considered acceptable for use in Mercury engines. Fuels containing higher levels of ethanol, such as E15 gasoline, are not considered acceptable for use. The use of fuels containing more than 10 percent ethanol can void the warranty.
How much is a Mercury 115 outboard?
$12,999.00. Brand New 115HP Mercury 4-Stroke EFI CT outboard motor. XL Command Thrust fits both 20" and 25" boat and pontoon transoms. Model Includes Electronic Fuel Injection (EFI) plus Power Tilt & Trim.
What kind of fuel should be used on a four stroke engine?
A minimum of 87 octane/87 AKI (91 RON); If operating at high altitude, see below. Gasoline with up to 10% ethanol (gasohol) or up to 15% MTBE (methyl tertiary butyl ether), is acceptable.
How many cylinders does a Mercury 115 4-stroke have?
4SpecificationsType of Engine4-StrokeNumber of Cylinders4Horse Power115ConfigurationIn-lineWeight359.00lbs10 more rows
What grade of gas is best for a boat?
As one of the most widely-available and inexpensive marine fuels, E10 is safe for most boat engines. E10 stands for “10% ethanol content” gasoline.
What octane booster actually works?
When it comes to the best overall octane booster, we love the Torco F500010TE Unleaded Fuel Accelerator. This octane booster can serve a wide range of engines and boost your car's octane levels as high as 102. It's also compatible with oxygens sensors and catalytic converters.
Is there a difference between marine gas and regular gas?
Re: Auto Vs Marine Gasoline The difference is about 4% better performance and economy in the marina gas due to 4% more BTU's in the ethanol free gasoline. Price is about 19 cents more per gallon at the marina.
Why is ethanol used in gasoline?
Ethanol can be used to meet EPA requirements for a cleaner burning fuel. Ethanol slightly improves Octane Rating. Ethanol can help reduce our dependence on foreign oil. The EPA does not permit more than 10% Ethanol to be added in fuels labeled as gasoline.
What is ethanol made of?
Ethanol is an alcohol made from sugar cane, wheat and many other organic materials. Ethanol is often blended with gas (E10) and has been used in the automotive industry since the early 1980s. More recently, Ethanol has been made available as E85 (85% ethanol) for flex fuel autos only.
Can you use alcohol in sterndrive?
The use of alcohol in gasoline is increasing as an alternative to petroleum based fuel and used in reformulated (oxy genated) fuels, however, some drawbacks you may encounter to this technology for use with marine engines are: Corrosion of metal parts.
Does E10 absorb water?
E10 absorbs water readily and easily. If sufficient water is absorbed, "phase separation" can occur-water and ethanol will settle to the botton of the tank and gasoline will be on top. Phase separation cannot be reversed with agitation or fuel additives.
What are Mercury fuel additives?
Mercury Fuel Additives for Performance and Engine Life. Mercury fuel additives care for an often overlooked aspect of your outboard – the fuel system. Fortunately, most boat owners pay very close attention to their engine oil. However, your fuel system should be treated with the same consideration as fuel, like engine oil, ...
What is the second step in Mercury fuel care?
The second step within Mercury’s fuel care system cleans your engine and fuel system. All combustion motors develop carbon deposits and the best way to clean those deposits is to add Quickleen to your fuel tank.
How many gallons of fuel is in a 12 oz bottle of Quickleen?
One ounce of Quickleen treats five gallons of fuel, so a 12-ounce bottle treats 60 gallons. Quickleen does not contain fuel stabilizers, so it must be used in conjunction with Quickare to prevent fuel breakdown and oxidation.
Why add a fuel stabilizer to a boat?
If your boat will be sitting for an extended period of time, you need to add a fuel stabilizer like Quikstor to prevent both regular and ethanol-blended fuels from breaking down, oxidizing, and causing fuel system corrosion. Before storage add a bottle of Quickstor to your fuel tank, then run the engine so that the treated fuel circulates ...
How long does Quickare keep fuel fresh?
A bottle of Quickare keeps fuel fresh between fill-ups for up to three months. It also cleans existing varnish and gum deposits within fuel lines, tanks, carburetors and fuel injectors, intake valves, and spark plugs; as these deposits can significantly impede engine performance.
Does fuel damage an outboard engine?
However, your fuel system should be treated with the same consideration as fuel, like engine oil, circulates throughout your outboard engine, and degraded fuel will leave damaging deposits throughout your fuel system and engine causing excessive wear and tear that reduces engine performance and fuel efficiency.
Why is E15 fuel not recommended for boats?
The approval of E15 fuel is putting boaters who fuel up at retail locations at risk because biofuels ARE NOT recommended for use in boats of any kind. One mistake at the gas pump can be a source of expensive, warranty voiding repairs and dangerous engine failure.
When is the deadline for comments on the fuel for marine engines?
The deadline for public comments is July 11. Take a minute and leave a comment to help protect the future of fuel for marine engines. Fueling is an important part of any trip to the lake. Don’t let misfueling bring your weekend plans to a halt. Check your tanks, check the pumps, and enjoy the lake!
Why is misfueling marine engines on the rise?
Here’s one reason why. The federal ethanol mandates require increasing amounts of biofuels—including corn ethanol—to be blended into the US fuel supply every year, such as E15 fuel.
What are the exemptions for ethanol?
A few exemptions to the standard allow gasoline without ethanol to be sold: 1 - When ethanol blends purchased at wholesale exceed the price of gasoline 2 - When selling premium unleaded gasoline with an octane rating of 91 or higher 3 - Gasoline sold at airports 4 - Gasoline sold at marinas
What happens when water comes in contact with ethanol?
However, when water comes in contact with ethanol blended fuel, the fuel and water can separate to form distinct layers in your tank. The upper “gasoline” layer will be depleted of ethanol and have a reduced octane level.
What to do if you find water in your fuel tank?
If you discover water in your fuel tank, pump the tank until it is dry. When you remove the fuel, place it in a clear container for inspection. If the fuel is not clear or has a bad or sour odor, you need to clean the tank. - Add a quality cleanerthat will help clean deposits in the engine.
Is E15 cheaper than E10?
Even though E15 can be less expensive than E10 fuel, the higher the risk of engine and fuel system damage is probably not worth the savings. 4. Transitioning from E0 to E10. Ethanol free fuel is the best option for marine engines, but E10 can still be used if necessary.
What is marine gas?
There is no exact definition of "marine gas", it's a general description and could possibly include, no road tax, no ethanol, premium fuel (high octane), or just what they sell in the pump at the marina.
Is marine gas ethanol compliant?
Many years ago, marine gas was lower quality and lower octane rating than auto pump gas. NOW, the new four stroke engines are ethanol compliant and it is OK--preferable even on just a cost basis--to use regular 87 octane auto pump gas.
Can you use non-E fuel in a gas station?
Just use fresh E or non E high octane fuel you can buy at any gas station, engine will work much smoother and keep combustion chamber much cleaner than running standard fuels.
Is ethynol allowed in gas stations?
Here in Missouri, the powers that be have allowed 15% ethynol to be sold at gas stations. Use of this fuel will actually void the factory warranty on many brands of engines. Most of the time the gas station employees don't even know what percentage of ethynol is in the fuel they sell.
What is Yamaha's fuel stabilizer?
Yamaha says its proprietary stabilizer formula features anti-corrosive components that protect exposed copper, solder and other metals from the nasty sodium sulfate present in ethanol.
How much filtration does a Yamaha filter have?
Yamaha's big filter flows 90 gph; its smaller filter flows 60 gph and is for outboards less than 115 hp. Yamaha says its filters achieve 95 percent filtration, almost double the 51 percent filtration rate required for the 10-micron rating.
Is ethanol a solvent?
Ethanol remains the leading culprit of fuel issues in gasoline-powered marine engines — ethanol is corrosive, it’s a solvent, and it absorbs moisture. In a boat it’s nothing but trouble. The obvious action is to not fuel your boat with an ethanol-blend gas.
What is the best fuel additive for a 4 stroke outboard?
What is the Best Fuel Additive for 4-Stroke Outboard. Sea Foam is the most popular, safest, and what I would recommend for anyone who’s still trying out fuel additives for this type of engine. More or less, it delivers every major benefit your 4-stroke outboard can gain from a fuel additive.
Is sea foam safe for outboards?
Is Sea Foam Safe for 4-Stroke Outboard. It’s not only very safe but easy to use and recommended for most 4-stroke outboard engines. The brand itself has confirmed this on its main website. You can always pour directly into the tank without any issues.
Can you use ethanol in boating?
Any boater having perennial problems with ethanol gasoline, not least of which are costly engine repairs and low fuel storage life, should know that a trusty partner can be found with this additive. It delivers a plethora of advantages seldom enjoyed by boaters who rely on fuel additives.
What is Yamaha's fuel stabilizer?
Yamaha says its proprietary stabilizer formula features anti-corrosive components that protect exposed copper, solder and other metals from the nasty sodium sulfate present in ethanol.
How much filtration does a Yamaha filter have?
Yamaha's big filter flows 90 gph; its smaller filter flows 60 gph and is for outboards less than 115 hp. Yamaha says its filters achieve 95 percent filtration, almost double the 51 percent filtration rate required for the 10-micron rating.
Is ethanol a solvent?
Ethanol remains the leading culprit of fuel issues in gasoline-powered marine engines — ethanol is corrosive, it’s a solvent, and it absorbs moisture. In a boat it’s nothing but trouble. The obvious action is to not fuel your boat with an ethanol-blend gas.