
Ethanol-Blended Fuels (E10)
Gasoline is distributed, in the United States and other
markets, containing ethanol. Volvo Penta gasoline
engines may be operated using gasoline blended with
no more than 10% ethanol and that meets the mini-
mum octane specification. 10% ethanol-blended fuel
is also commonly referred to as "E10."
NOTICE!
Do not use ethanol blends greater than 10%,
especially E85 (85% ethanol). Volvo Penta engines
are not designed to run on high percentages of etha-
nol. Loss of performance will occur. Engine damage
may also occur; damage caused by fuel with too high
a percentage of ethanol is not covered by the warranty.
Because of the high content of alcohol in the blend,
users of ethanol-blended fuels must take additional
care in the maintenance of their fuel systems. The
effects vary depending on the fuel tank material. Most
boats have fuel tanks constructed of aluminum, stain-
less steel, or composites. Since ethanol-blended fuels
attract and hold moisture, ethanol content can contrib-
ute to corrosion of the tank material in aluminum fuel
tanks. Corrosion material can clog fuel filters and dam-
age injectors, carburetors, and other fuel system com-
ponents. Stainless steel and composite fuel tank mate-
rials are not affected by ethanol-blended fuels. How-
ever, ethanol-blended fuel can act as a solvent, loos-
ening and washing old deposits or contaminants into
the fuel system.
NOTICE!
Fuel system or engine damage caused by
contamination from water, foreign particles, sludge, or
gums entering or forming in the fuel system is not cov-
ered by the warranty.
Volvo Penta gasoline engines are equipped with a
water separating fuel filter (see
Engine Fuel Filter
Replacement
in the section entitled
Maintenance
). The
use of an additional water separating fuel filter between
the fuel tank and the engine is recommended. The filter
must be approved for gasoline inboard installations
and be installed in accordance with US Coast Guard
regulations and ABYC standards. The filter must be
rated for use with gasoline and have a minimum rating
of 50 gallons (189 liters) per hour.
Water separating fuel filters should be checked fre-
quently for water and contaminants in accordance with
the filter manufacturer’s recommended service inter-
vals. Check and/or replace the filters when engine per-
formance is poor (see the section entitled
Engine Trou-
bleshooting Guides
). Carry spare filters and needed
tools and supplies to change filters when boating.
The use of a commercially available fuel stabilizer such
as STA-BIL® is recommended when storing ethanol-
blended fuels for more than 2 weeks. Avoid extended
storage of ethanol-blended fuels whenever possible.
51585
Technical Data
47700385 05-2009
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