Operation In Foreign Countries - Chevrolet 1980 Citation Owner's Manual

Federa1 regulations require that pumps delivering unleaded gasoline be labeled
with the word UNLEADED. Only these pumps have nozzles which fit the filler
neck of your vehicle gasoline tank.
In- the United States, Federal law also requires that gasoline octane ratings
be
posted on the pumps. The octane rating shown -is an average of Research octa!1e
(R) and Motor octane(M). In most parts of the United States, you should use
unleaded gasoline with an octane rating of at least 87. However, you may use
unleaded gaSOline with an octane rating as low as 85 in thes:e high-altitude areas:
Colorado, Montana, New Mexico, Utah. Wyoming. northeastern Nevada.
southern Idaho, western South Dakota, and that part of Texas which is directly
south of New Mexico.
Using unleaded gasoline with an octane rating lower _ than staled above can cause
persistent, heavy "spark knock." (''Spark knock" is a metallic rapping noise.) This
can
lead to engine damage. If you detect heavy
spark knock even when using
gasoline of the stated octane rating, or if you hear steady spark knock while
holding a steady speed on level roads, have your dealer correct the problem.
However. now and then you may notice light spark knock for a short time while
accelerating or driving up hills. This is no cause for concern, because you get the
greatest fuel economy benefit from the gasoline's octane rating when there is
occasional light spark
knock ~
Using gasoline with a higher octane rating than that
which allows occasional spark knock is an unneceSsary expense.
Gasohol
Gasohol, a mixture of unlead ed gasoline and ethanol (grain alcohol), is
available in some areas. You may use gasohol in your vehicle, provided it
is no more than 10% ethanol. 'Be: sure the gasohol has the same octane
ratings as stated above for unleaded gasoline. If drivability problems are
encountered because _ of the use of gasohol, you should switch back to
unleaded gasoline.
NOTICE: Take care to not spill gasohol on painted surfaces. Gasohol can cause
paint damage, which may not be covered under the New Vehicle Warranty.
OPERATION IN FOREIGN COUNTRIES
Your
engin~
is designed to run on unleaded gasoline with the octane ratings given
under '''Fuel Requirements" above.
If you plan to drive your vehicle outside the United States and its jurisdictions
or Canada, there is a chance the gasolines available in some count,ries will not meet
the needs of your engine. Low octane rated gasolines may cause engine knocking
or serious engine damage,: for which Chevrolet is not responsible.
Using leaded gasoline in-a vehicle equipped with a catalytic converter may cause
the converter to lose its effectiveness as an emission control.
It could also
affect
the emission warranty. If you must use leaded gasoline in a vehicle designed for
unleaded fuel, converter modification and different maintenance intervals will be
required. For gasoline information and a maintenance schedule for the countries
in which you plan to travel, write to: Chevrolet Motor Division, Consumer
Relations Department, Detroit, Michigan 48202, (in Canada, write to General
Motors of Canada Limited. Customer Service Department, Oshawa, Ontario LlJ
5Z6).
When writing, please include:
• the Vehicle Identification Number and
• the countries in which you plan to travel.
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