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FUEL & OIL
Gasoline Recommendations
UNITED STATES AND CANADA
Use a major brand of automotive unleaded gasoline with a minimum
posted octane rating of 87. Mid-grade automotive gasolines that con-
tain fuel injector cleaner are preferred for added internal engine
cleanliness. Leaded gasoline is not recommended.
INTERNATIONAL
Use a major brand of automotive unleaded gasoline with a minimum
posted octane rating of 90RON. Automotive gasolines that contain
fuel injector cleaner are preferred for added internal engine cleanli-
ness. Leaded gasoline is acceptable in areas where unleaded gaso-
line is not available.
ALCOHOL IN GASOLINE
We do not recommend the use of gasoline which contains alcohol
because of the possible adverse effect the alcohol may have on the
fuel system. In general, if only gasoline containing alcohol is avail-
able, it must not contain more than 10% ethanol or 5% methanol, and
the addition of a Quicksilver Water Separating Fuel Filter is recom-
mended.
If gasoline containing alcohol is used or if you suspect the presence
of alcohol in your gasoline, increase your inspection of the fuel sys-
tem, visually checking for fuel leaks or abnormalities.
Gasoline containing alcohol may cause the following problems to
your outboard and fuel system:
• Corrosion of metal parts.
• Deterioration of elastomers and plastic parts.
• Wear and damage of internal engine parts.
• Starting and operating difficulties.
• Vapor lock or fuel starvation.
Some of these adverse effects are due to the tendency of gasoline
containing alcohol to absorb moisture from the air, resulting in a
phase of water and alcohol which separates from the gasoline in the
fuel tank.
The adverse effects of alcohol are more severe with methanol and
are worse with increasing content of alcohol.
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