IMPREZA U.S.A. (E)
7-4
Fuel requirements
B Fuel octane rating
Your engine is designed to use only unleaded gasoline with an octane
rating of 87 AKI or higher. This octane rating is the average of the Re-
search Octane and Motor Octane numbers and is commonly referred
to as the Anti Knock Index (AKI).
Using a gasoline with a lower octane rating can cause persistent and
heavy knocking, which can damage the engine. Do not be concerned
if your vehicle sometimes knocks lightly when you drive up a hill or
when you accelerate. See your dealer or a qualified service techni-
cian if you use a gasoline with the specified octane rating and your
vehicle knocks heavily or persistently.
B Unleaded gasoline
The neck of the fuel filler pipe is designed to accept only an unleaded
gasoline filler nozzle. Under no circumstances should leaded gaso-
line be used because it will damage the emission control system and
may impair driveability and fuel economy.
B Gasoline for California-certified LEV
If your vehicle is a California-certified Low Emission Vehicle (LEV) as
indicated on the underhood tune-up label, it is designed to optimize
engine and emission control system performance with gasoline that
meets California low sulfer specifications. Your vehicle will operate on
gasoline meeting Federal specifications.
B Gasoline for cleaner air
CAUTION
Do not let fuel spill on the exterior surfaces of the vehicle. Fuels
containing alcohol may cause paint damage, which is not cov-
ered under the SUBARU Limited Warranty.
Your use of gasoline with detergent additives will help prevent depos-
its from forming in your engine and fuel system. This helps keep your
engine in tune and your emission control system working properly,
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