FAQ

Is ethanol gas bad for boat motors?

Can ethanol damage your engine?

Since the ethanol is hygroscopic, it absorbs water from the air, causing the fuel blend to separate. Ethanol can be extremely damaging to small engines and high-powered sports equipment, leading to corrosion of the engine and fuel system.

What fuel should I use in my boat?

What Type of Gas Should I Use in My Boat? All current outboard, sterndrive and inboard gasoline engines are designed to operate safely on fuel with no more than 10 percent ethanol (known as E10), and under no circumstance should fuel with more than 10 percent ethanol (such as E15 or E85) be used in a marine engine.

Is ethanol gas bad for carbureted engines?

Ethanol blends can corrode your carburetor, fuel tank, and other fuel system components and damage engine seals and O-rings, according to industry experts. And that means costly repairs at the very least–and engine damage at worst.

Can you use ethanol gas in a Yamaha outboard?

What are the drawbacks of ethanol?

Disadvantages of Ethanol Fuel

  1. Requires a Large Piece of Land. We’ve learned that ethanol is produced from corn, sugarcane, and grains. …
  2. The Distillation Process is Not Good For the Environment. …
  3. Spike in Food Prices. …
  4. Affinity For Water. …
  5. Difficult to Vaporize.

Does ethanol reduce engine life?

— Efficiency: Ethanol-blended fuel’s lower energy efficiency may reduce fuel economy of your engine. — Stalling: Ethanol can cause engine stalling if the water in the ethanol separates from the gasoline and floods the engine. This problem is most likely in engines that sit unused for long periods of time.

What kind of gas do you use in an outboard motor?

For the most part, outboard motors will run on E10 gasoline (ten percent ethanol and ninety percent gasoline). Older outboard motors, however, were not designed for E10 and may have problems. Keep in mind that there are some risks to using ethanol-blended fuels.

What fuel should I use 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.

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.

What fuel is best for carbureted engines?

In short, buy ethanol-free gas if you can, and buy gas with sufficient octane that your car doesn’t knock. If you’re forced to choose, take the higher octane to prevent knocking. But if the car doesn’t knock, go with the ethanol-free gas.

How do I protect my carburetor from ethanol?

Does Stabil prevent ethanol damage?

STA-BIL prevents the fuel in the tank from deteriorating and stops the above from happening. It also removes water from the petrol tank and cleans carburettors and fuel injectors. STA-BIL Storage protects against all the dangers of ethanol and E10 petrol (it in fact protects against ethanol blends up to E85).

Should I use premium gas in my boat?

It’s important to note that while the higher octane will not give you more standard performance than your engine is designed to give, the lower octane will reduce the expected peak performance of your engine. Bottom line: by going cheap you’re robbing your boat and yourself.

How long does non ethanol gas last in a boat?

Ethanol-free gas is suitable for use for around six months if correctly stored and sealed. It lasts longer than gas with ethanol in it can still degrade, especially if it’s been exposed to atmospheric conditions. Although ethanol-free gas does go bad, you can mitigate the risk of degradation by storing it correctly.

Can you put gas station gas in a boat?

You can run ethanol fuel in a boat. Though it is strongly recommended that non-ethanol fuel be used. There can be damaging and costly effects done to the engine due to using ethanol fuel.

Does ethanol in gas cause problems?

Ethanol can cause several types of damage to the engine in your vehicle. Your vehicle’s fuel intake components can be damaged. In addition, ethanol can cause damage to the fuel pump in your vehicle. These repairs and replacements can range from a few hundred dollars to more than $1,000 to take care of properly.

What are the pros and cons of ethanol?

Ethanol. Pros: Reduces demand for foreign oil, low emissions, high octane, and can potentially be produced from waste materials; existing cars can use 10-percent blends (called E10), and more than 8 million cars already on the road can use E85. Cons: Twenty-five percent lower fuel economy on E85 than gasoline.

What is the main advantage of ethanol over gasoline?

Ethanol is a renewable fuel because it is produced from biomass. Ethanol also burns more cleanly and completely than gasoline or diesel fuel. Ethanol reduces greenhouse gas (GHG) emissions because the grain or other biomass used to make the ethanol absorbs carbon dioxide as it grows.

Does ethanol damage older engines?

Fuels containing ethanol produce over 30% less power than older types of petrol, so the performance of older cars not built to work with this kind of fuel can suffer. Ethanol is a powerful solvent and can corrode materials like rubber and fibreglass, both of which are often found on classics.

Does ethanol cause carbon build up?

10% Ethanol in gasoline increases carbon build-up.

Is ethanol worse than gasoline?

The process to harvest and produce corn-based ethanol creates more harmful emissions than normal gasoline, according to a new report published in Proceedings of the National Academy of Science.

What kind of gas does a Mercury outboard take?

Unleaded Regular

Specifications – 150

HP / kW 150 / 110
Recommended fuel Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum
Recommended oil Mercury FourStroke Oil 10W-30
Engine protection operator warning system SmartCraft Engine Guardian
Compatible with SmartCraft digital technology Yes

What kind of gas does a MerCruiser take?

automotive unleaded fuel

MerCruiser engines will operate satisfactorily when using a major brand of automotive unleaded fuel meeting the following specifications: Posted Pump Octane Rating of 91 RON minimum. Premium Unleaded Petrol (PULP 95 RON) is also acceptable. Consult the Owner’s Manual for more details.

What kind of gas should I use in my Mercury 4 stroke outboard?

98 unleaded gasoline

98 unleaded gasoline is the best choice for a Mercury 4-stroke boat engine.

What fuel is best for 2 stroke outboard?

“We recommend 87 octane for both our two- and four-stroke motors. We stress the importance of a good, name-brand gasoline.” Additionally, Grigsby says Yamaha recommends the regular use of fuel additives, such as conditioner, stabilizer, combustion-chamber cleaner and gas-line anti-freeze.

What octane fuel is best for 2 stroke outboard?

That said, your choice of fuel remains critical. Burning 87-octane gasoline in a two-stroke outboard causes carbon buildup that shortens engine life. Dose the fuel with a carbon-cleaning additive or fill the tank with 89-octane or higher fuel.

Do boats use the same gas as cars?

Personal Boats Smaller boats are able to be fueled with the same type of gasoline as your car, which can include diesel fuel.

What is marine gas octane?

Marine gas is usually 89 or 90 octane ethanol free.

Can I use E10 in my boat?

Yes! Although petrol pumps will now sell E10 as standard, Premium / Super Unleaded will continue to be E5. So, although it may cost slightly more, it will still be readily available and in most cases, it will still be the preferrable option over using E10 for marine use.

How much ethanol does 87 gas have?

10% ethanol

Ethanol has a higher octane number than gasoline, providing premium blending properties. Minimum octane number requirements for gasoline prevent engine knocking and ensure drivability. Lower-octane gasoline is blended with 10% ethanol to attain the standard 87 octane.

Does ethanol clog a carburetor?

As ethanol eats away at the metal parts, as well as the rubber and plastic parts of the fuel system and carburetor, it leaves those corroded particles in the carburetor bowl. These particles can clog the carburetor jets, causing extremely poor engine performance. The particles can even enter your engine’s cylinder!

Is premium gas better for carbureted engines?

When should you get premium gas? If your vehicle owner’s manual suggests using premium gas, there is a reason. Cars that require premium gasoline have high-compression engines, turbochargers, and other high-performance aspects.

Why is ethanol free gas better?

Compared to traditional gas blends like E10 that have 10% ethanol, non-ethanol gas lasts much longer. If stored properly, ethanol-free gas can last up to six months. It is not as likely to succumb to oxidation or evaporation. E10 gas has a three-month shelf life maximum.

Does seafoam protect against ethanol?

Remember, Sea Foam Motor Treatment in your gasoline, ethanol, and diesel fuel works to stabilize petroleum molecules, control moisture, resist evaporation, preserves light ignition vapors, cleans residues and deposits, prevents gum and varnish formation, and lubricates upper cylinders!

Should I add stabilizer to ethanol free gas?

You don’t need to add a stabilizer to non-ethanol gas, but be ready to throw it out after a few months of storage. Adding a stabilizer can raise its life expectancy up to two or three years, which is almost four times longer.

Does ethanol corrode aluminum?

Aluminum is susceptible to rapid corrosion rates in dry ethanol blended fuels. Water concentration and temperature were found to be the principal drivers. Higher ethanol concentrations result in faster corrosion rates of aluminum alloys.

Should I put STA-BIL in my boat?

Fuel stabilizer slows the rate ethanol absorbs water and reduces the possibility of phase separation occurring in your boat’s fuel tank. This is why you should add fuel stabilizer every time you refuel your boat.

What is better STA-BIL or seafoam?

Is Sea Foam better than Stabil? Both Sea Foam and Stabil Storage can keep fuel in good condition for up to 24 months. However, Stabil Storage costs half as much as Seafoam and is 2.5 times more potent, so it provides a much better deal overall.

How long does gas stay good in a boat?

In general, pure gas begins to degrade and lose its combustibility as a result of oxidation and evaporation in three to six months, if stored in a sealed and labeled metal or plastic container. Ethanol-gasoline blends have a shorter shelf life of two to three months.

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.

Can you use TruFuel in outboard motors?

A: TruFuel can be used in all air-cooled, 2-cycle equipment. Leaf blowers, line trimmers and chainsaws are the most common, but snow blowers, small generators and air-cooled outboard engines will also benefit from the superior performance and protection of TruFuel.

Can you use 93 octane in a 2 stroke?

If you own a 4 stroke, for example, the 82-octane works just fine, but for a 2-stroke, you should go for the ethanol-free higher octanes (92 and 93) because the lower octanes tend to detonate.

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