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IMPREZA U.S.A. (E)
7-4
Fuel requirements
J 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 technician if you
use a gasoline with the specified octane rating and your vehicle knocks
heavily or persistently.
J Unleaded gasoline
The neck of the fuel filler pipe is designed to accept only an unleaded
gasoline filler nozzle. Under no circumstances should leaded gasoline
be used because it will damage the emission control system and may
impair driveability and fuel economy.
J Gasoline for California-certified LEV and TLEV
If your vehicle is a California-certified Low Emission Vehicle (LEV) or
Transitional Low Emission Vehicle (TLEV) as indicated on the underhood
tune-up label, it is designed to optimize engine and emission control sys-
tem performance with gasoline that meets California specifications. Your
vehicle will operate on gasoline meeting Federal specifications.
J 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 deposits
from forming in your engine and fuel system. This helps keep your en-