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Q: What octane fuel does a mercury 40 hp out board motor use?
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What is the fuel type of a 4horse power Mercury outboard motor?

you need a minimum of 87 octane gas


What kind of fuel is best for a mercury mountaineer?

For a Mercury Mountaineer : ( " regular " unleaded gasoline , 87 octane )


What octane gasoline should you use in your mercury 225 efi?

The Mercury EFI outboards require a minimum octane rating of 87. Since the engine will operate on the lower octane fuel, it is a matter of personal preference.


Can a 1999 mercury mountaineer run on on alternative fuel?

The 1999 Mercury Mountaineer owners manual shows : unleaded fuel only - 87 octane as the recommended fuel


Do you use 89 90 or 92 unleaded on a 2000 mercury 25 hp motor?

The 2000 model, Mercury 25 hp outboard, requires a minimum octane 89 rated, unleaded fuel, however, with the quality of gasoline being what is presently, it would not hurt to run the higher octane fuels.


Can e 85 fuel be used in a 2003 25 hp 4stroke mercury outboard?

Mercury Marine has recommended 87 octane fuel in their outboards. While the engine may well run on a lesser octane fuel, I would personaly err to the side of a higher rated fuel.


What octane rating is suitable for a 1996 Mercury villager?

Regular fuel (87) is fine.


What fuel do you use in a mercury 65 hp boat motor?

The 65 hp Mercury outboard is designed to operate on 87 octane gasoline mixed with 2 cycle oil at a 50:1 ratio. This is roughly one pint of 2 cycle oil, to six gallons of fuel.


What will cause the emissions light to come on for a 2001 Mercury Cougar?

Poor fuel or water in the fuel. Using the wrong octane fuel.For the 2001 you should use Unleaded fuel only.87 to 91 octane.


What is the oil to fuel mixture for a 115 horsepower mercury outboard engine?

Probably 50-1 is the correct mix, but! You do not provide the year, so I suggest you call your local Mercury dealer to be 100% sure. Fuel/Air mixture is critical. Also ask about which octane fuel you should use. it may require 89 octane fuel.Probably 50-1 is the correct mix, but! You do not provide the year, so I suggest you call your local Mercury dealer to be 100% sure. Fuel/Air mixture is critical. Also ask about which octane fuel you should use. it may require 89 octane fuel.


Can low octane fuel seize two strokes?

no but not mixing fuel to oil ratio correctly will seize a motor


What kind of fuel for mercury villager 2000?

" regular " unleaded , 87 octane ( according to the Owner Guide )