Subaru 2003 Impreza - Manual (Page 425)

IMPREZA(NA) A1850BE-A (ENGLISH)
GAS STATION REFERENCE
Fuel:
2.5 Liter models:
Use only unleaded gasoline with an octane
rating of 87 AKI or higher.
2.0 Liter (Turbo) models:
Use premium unleaded gasoline with an oc-
tane rating of 91 AKI or higher. If premium un-
leaded gasoline is not available, regular un-
leaded gasoline with octane rating of 87 AKI
or higher may be temporarily used. For opti-
mum engine performance and driveability, it
is recommended that you use premium grade
unleaded gasoline.
Fuel octane rating:
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). Refer to “Fuel” section in
this manual.
Fuel capacity:
15.9 US gal (60 liters, 13.2 Imp gal)
Engine oil:
Use only API classification SL or SJ with the
words “ENERGY CONSERVING”
or the New API certification mark (starburst
mark) displayed on the container.
Engine oil capacity:
Non turbo models:
4.2 US qt (4.0 liters, 3.5 Imp qt)
Turbo models:
4.8 US qt (4.5 liters, 4.0 Imp qt)
Cold tire pressure:
See the label located under the driver’s door
latch.