What kind of fuel does a Yamaha 4 stroke outboard take?

What kind of fuel does a Yamaha 4 stroke outboard take?

The yamaha motors only require either 87 or 89 oct fuel. The sho’s and offshores require 89 oct and the rest only require 87 oct. These engines were designed to run up to 10% ethanol.

What gas should I use in my outboard?

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.

Do boat engines use regular gas?

Let’s find out what fuels do boats use in general and explore all of them quickly. Boats use either gas (petrol) or diesel as a fuel, but not both. Generally, small boats will use ethanol-free gas (regular gas) or E10 gas (10% of ethanol in gas), and diesel is not common in small boats.

Should I use non ethanol gas in my boat?

Yes! 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.

Are Yamaha outboards compatible with E10 fuel?

Yes! Although petrol pumps will now sell E10 as standard, Premium / Super Unleaded will continue to be E5.

Do outboard motors need premium gas?

Its owners manual states that the recommended fuel is leaded regular, with the second choice being leaded premium. That said, your choice of fuel remains critical. Burning 87-octane gasoline in a two-stroke outboard causes carbon buildup that shortens engine life.

What is the best fuel for boats?

Ethanol free fuel is the best option for marine engines, but E10 can still be used if necessary. The most likely time for fuel problems to occur is when you first begin using ethanol-blended fuel, because of phase separation.

Can I put non ethanol gas in my boat?

Is ethanol gas OK for boats?

What gasoline is ethanol free?

According to Dan McTeague, a noted petroleum analyst, Shell and Esso 91 are both ethanol free. All other grades from the companies have some ethanol content, but the mid-grade blend is pure gas, which means it not only corrodes less than ethanol blends, but is less likely to deteriorate when stored.