Use of a lower than recommended gasoline can
cause “pinging,” which is also called “spark knock”
or “pre-ignition,” (an occasionally loud rapping or
rattling noise) which can, if severe or persistent,
can lead to extensive engine damage. Light pinging
experienced under a heavy load, such as climb-
ing a steep hill, is not a cause for concern. If ping-
ing occurs at steady speeds under normal loads,
change brands of fuel. If the pinging persists, see
your dealer.
Fuel Recommendations. For optimum perfor-
mance run unleaded pump gasoline with an R+M /2
(US standard) octane rating of at least 90. To meet
clean air standards, much of the gasoline used
in the United States and Canada is oxygenated,
meaning it’s blended with alcohol or ether com-
pounds to help reduce exhaust emissions. Do not
use a gasoline with higher percentages of any of
the following oxygenates than listed as follows:
ETHANOL (ethyl or grain alcohol) up to 10-percent
by volume.
MTBE (Methyl Tertiary Butyl Ether) up to 15-percent
by volume. Because of its extreme toxicity its use
has declined signicantly in the US and Canada.
METHANOL (methyl or wood alcohol) up to 5-per-
cent by volume. Do not use gasoline oxygenated
with methanol if does not also contain co-solvents
and corrosion inhibitors to protect the fuel system.
WARNING! Gasoline is highly ammable and
explosive. You can be severely burned or injured
when handling fuels. Always stop the engine and
keep gasoline away from sources of heat, sparks
and ame. Only handle gasoline outdoors. Wipe
up spills immediately. Do not use as a solvent or
cleaner.
37
To Next Page
Loading...