Should I use premium gas in my 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.
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What is the best gas for 2 stroke outboards?

“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.
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Is premium gas better for outboard motors?

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.
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Will premium gas hurt my boat?

You can fuel it up similarly to your car! Personal boats can use the same type of gasoline as your vehicle, including unleaded (87 octane), mid-grade (octane 89), premium (octane 93), and diesel.
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Can you use premium in a 2 stroke?

Fuel that is premium is not only better for your equipment, but it is also better for the environment. The high-octane gas and synthetic oil in your two-stroke engine will not leave an odor or burn cleanly, so you can operate your engine worry-free.
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Don't waste your money on Premium fuel for a 2 stroke - 87 Regular vs 91 Premium



What petrol do I use for a 2-stroke engine?

Two stroke fuel is basically unleaded petrol mixed with 2 stroke oil. The oil to fuel mix ratio should be specified in your engines instruction manual. The oil in 2 stroke fuel is extremely important in lubricating your engine as two stroke engines do not have an internal oil reservoir.
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What is the best octane for 2 cycle engines?

For small engines, always use the highest octane you can find, he says. Typically, that's around 93 octane, though regionally you will find higher octane blends.
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What is the best gas for outboard motor?

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.
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What type of gas is best for an outboard motor?

Ethanol-free fuel is the best way to go for most outboard motors. In many cases, you can use the same fuel in your boat as you do in your personal vehicle. Be sure to check with the local marina or wherever you typically fill up your boat to see what type of ethanol-blended fuels they offer.
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What kind of gas does a Mercury 2 stroke outboard take?

2hp to 20hp - Unleaded Petrol (ULP) - minimum 91 Posted Octane. 30hp & above - Premium Unleaded Petrol (PULP) - minimum 95 Posted Octane.
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Is premium gas better for small engines?

For those wondering “Is premium gas better for small engines?” the answer is most likely no. That's because small engines are not built with high compression ratios. There is no threat of engine knock taking place.
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Is ethanol free gas better for two-stroke engines?

The easiest way to prevent ethanol damage is to simply avoid gasoline that contains an ethanol mixture. Always check at the pump to make sure that the fuel you are using is ethanol-free, or at the very least, contains 10 percent ethanol or less (the maximum safe ratio for newer 2 stroke engines).
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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.
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Is higher octane better for 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. Two-stroke dirt bikes also require a special fuel/oil mix.
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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.
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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.
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What octane is marine fuel?

Most marine gasoline engine manufacturers recommend using ethanol-free or 10% ethanol gasoline with a minimum octane rating of 87 (a few sport engines require higher octane).
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Can I use regular 2 stroke oil in my outboard?

Outboard Engine Oil. A frequent question we answer at DHS Equipment, is about oil for 2-cycle engines. Many people ask, "can I use outboard engine oil in my 2-cycle equipment?" This has been debatable for years, but the short answer is, no, you should not.
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How many miles per gallon does an outboard motor get?

At full throttle and averaged across makes and models, those engines burn about one gallon of fuel per hour for every 10 horsepower (hp). Generally, it takes about 2.5 hp to plane 100 pounds for a near flat-bottomed boat.
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How do you mix gas for a 2 stroke outboard?

Use a 40:1 two-cycle oil mix ratio. One gallon of gasoline combined with 3.2 oz of two-cycle engine oil. Unsure of the age of your equipment? Use the 40:1 mixture.
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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.
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Is premium gas really worth it?

If your car doesn't require premium, fill up with regular.

In a consumer notice, the Federal Trade Commission, notes: “In most cases, using a higher-octane gasoline than your owner's manual recommends offers absolutely no benefit. It won't make your car perform better, go faster, get better mileage or run cleaner.”
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Can you mix 87 and 91 gas?

Yes, drivers can mix the two types of fuel. The combined gas types will result in an octane level somewhere in the middle — something the vehicle “will survive,” according to The Drive.
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What does ethanol do to a 2 stroke?

The problem with ethanol is that it attracts water and forms water bubbles in the fuel. Engines can have trouble passing water, which keeps the engine from running properly and affects power. Water can also make the rubber pieces inside in the engine brittle.
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