Fuel Requirements
IMPORTANT: Use of improper gasoline can damage your engine. Engine
damage resulting from the use of improper gasoline is considered misuse
of the engine and will not be covered under the limited warranty.
FUEL RATINGS
Mercury outboard engines will operate satisfactorily with any major brand of
unleaded gasoline that meets the following specifications:
USA and Canada
‑ A posted pump octane rating of 87 (R+M)/2, minimum, for
most models. Premium gasoline 91 (R+M)/2 octane is also acceptable for most
models.
Do not
use leaded gasoline.
Outside USA and Canada
‑ A posted pump octane rating of 91 RON,
minimum, for most models. Premium gasoline (95 RON) is also acceptable for
all models.
Do not
use leaded gasoline.
USING REFORMULATED (OXYGENATED) GASOLINE (USA ONLY)
Reformulated gasoline is required in certain areas of the USA and is
acceptable for use in your Mercury Marine engine. The only oxygenate
currently in use in the USA is alcohol (ethanol, methanol, or butanol).
GASOLINE CONTAINING ALCOHOL
Bu16 Butanol Fuel Blends
Fuel blends of up to 16.1% butanol (Bu16) that meet the published Mercury
Marine fuel rating requirements are an acceptable substitute for unleaded
gasoline. Contact your boat manufacturer for specific recommendations on
your boat's fuel system components (fuel tanks, fuel lines, and fittings).
Methanol and Ethanol Fuel Blends
IMPORTANT: The fuel system components on your Mercury Marine engine will
withstand up to 10% alcohol (methanol or ethanol) content in the gasoline. Your
boat's fuel system may not be capable of withstanding the same percentage of
alcohol. Contact your boat manufacturer for specific recommendations on your
boat's fuel system components (fuel tanks, fuel lines, and fittings).
Be aware that gasoline containing methanol or ethanol may cause increased:
•
Corrosion of metal parts
•
Deterioration of rubber or plastic parts
•
Fuel permeation through the rubber fuel lines
•
Likelihood of phase separation (water and alcohol separating from the
gasoline in the fuel tank)
FUEL AND OIL
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