Subaru 2008 IMPREZA - Manual (Page 381)

GAS STATION REFERENCE
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Fuel:
! Non-turbo models
Use only unleaded gasoline with an octane rating of 87 AKI or
higher.
! Turbo models
Use premium unleaded gasoline with an octane rating of 91 AKI
or higher. If premium unleaded gasoline with an octane rating of
91 AKI is not available, regular unleaded gasoline with octane
rating of 87 AKI or higher may be temporarily used. For
optimum engine performance and driveability, it is required that
you use premium grade unleaded gasoline with an octane
rating of 91 AKI or higher.
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Fuel octane rating
This octane rating is the average of the Research Octane and
Motor Octane numbers and is commonly referred to as the Anti
Knock Index (AKI). Refer to the
“Fuel” section in this manual.
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Fuel capacity
16.9 US gal (64 liters, 14.1 Imp gal)
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Engine oil:
Use only API classification SM with the words “ENERGY
CONSERVING ” and the ILSAC certification mark (starburst
mark) displayed on the container.
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Engine oil capacity:
4.2 US qt (4.0 liters, 3.5 Imp qt)
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Cold tire pressure:
Tire size P205/55R16 89V P205/50R17 88V
Wheel size 16 6 6 1 /
2
JJ 17 6 7 JJ
Pressure Front 33 psi (230 kPa, 2.3 kgf/cm 2 ) 33 psi (230 kPa, 2.3 kgf/cm 2 )
Rear 32 psi (220 kPa, 2.2 kgf/cm 2 ) 32 psi (220 kPa, 2.2 kgf/cm 2 )
Temporary spare
tire Size T125/70 D17
Pressure 60 psi (420 kPa, 4.2 kgf/cm 2 )