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PECIFICATIONS
90-8M0077672 JUNE 2013
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1350 OCTANE REQUIREMENTS (OUTSIDE THE U.S./CANADA)
Engine
FUEL TYPE
MINIMUM POSTED
OCTANE
1350
QC4v
Unleaded
1.
(R+M) ÷ 2 = 91 or
RON = 98*
NOTE: *Research Octane Number
USING REFORMULATED (OXYGENATED) FUELS (USA ONLY)
This type of fuel is required in certain areas of the U.S. The two
types of oxygenates used in these fuels are alcohol (ethanol) or
ether (MTBE or ETBE). If ethanol is the oxygenate that is used in
the gasoline in your area, refer to the
Fuel containing alcohol
section.
These reformulated fuels are acceptable for use in your Mercury
engine.
FUEL CONTAINING ALCOHOL
If the fuel in your area contains either methanol (methyl alcohol) or
ethanol (ethyl alcohol), you should be aware of certain adverse
effects that can occur. These adverse effects are more severe with
methanol. Increasing the percentage of alcohol in the fuel can also
worsen these adverse effects.
Some of these adverse effects are caused because the alcohol in
the fuel can absorb moisture from the air, resulting in a separation of
the water/alcohol from the gasoline in the fuel tank.
The fuel system components on your Mercury engine will withstand
up to 10% alcohol content in the gasoline. We do not know what
percentage your boat’s fuel system will withstand. Contact your boat
manufacturer for specific recommendations on the boat's fuel
system components (fuel tanks, fuel lines, and fittings).
Fuel containing alcohol may increase:
•
Corrosion of metal parts.
•
Deterioration of rubber or plastic parts.
•
Fuel permeation through rubber fuel lines.
•
Starting and operating difficulties.
IMPORTANT: Operating a Mercury Marine engine with gasoline
containing alcohol creates unique problems as a result of long
storage periods common to a boat. Cars normally consume
alcohol‑blend fuels before they absorb enough moisture to cause
problems; however, boats often sit idle long enough for phase
separation to occur. In addition, alcohol can wash protective oil films
from internal components causing corrosion.
IMPORTANT: Because of possible adverse effects of alcohol in
gasoline, it is recommended that only alcohol‑free fuel be used
where possible.
If only fuel containing alcohol is available, or if the presence of
alcohol is unknown, increased inspection frequency for leaks and
abnormalities is required.
L
OW
P
ERMEATION
F
UEL
H
OSE
R
EQUIREMENT
Low permeation fuel hose must be installed on all sterndrive engine
packages that are manufactured for sale, sold, or offered for sale in
the United States.
1.
Mercury Racing does not recommend using leaded gasoline. Leaded gasoline is acceptable in areas where unleaded gasoline is not available; however, lead particles may build up in the
exhaust passages and/or the combustion chambers.