Fuel Octane Rating - Subaru 2004 Legacy Owner's Manual

Fuel:
2.5 Liter models
Use only unleaded gasoline with an octane rating of
87 AKI or higher.
3.0 Liter models
Use premium unleaded gasoline with an octane rat-
ing of 91 AKI or higher. Regular unleaded gasoline
with an octane rating of 87 AKI may be used if nec-
essary. For optimum engine performance and drive-
ability, it is recommended that you use premium
grade unleaded gasoline.

Fuel octane rating

This octane rating is the average of the Research
Octane and Motor Octane numbers and is common-
ly referred to as the Anti Knock Index (AKI). Refer to
Cold tire pressure:
Tire size
Wheel size
Pressure Front
Rear
Rear at trailer
towing
Temporary Size
spare tire
Pressure
GAS STATION REFERENCE
P205/60R15 90H P205/55R16 89H
15 x 6JJ
32 psi (220 kPa, 2.2 kg/cm
30 psi (210 kPa, 2.1 kg/cm
–
T135/70R16
"Fuel" section in this manual.
Fuel capacity:
16.9 US gal (64 liters, 14.1 Imp gal)
Engine oil:
Use only API classification SL with the words "EN-
ERGY CONSERVING" and the New API certifica-
tion mark (starburst mark) displayed on the contain-
er.
Engine oil capacity:
2.5 liter models: 4.2 US qt (4.0 liters, 3.5 Imp qt)
3.0 liter models: 5.6 US qt (5.3 liters, 4.6 Imp qt)
16 x 6
2
) 30 psi (210 kPa, 2.1 kg/cm
2
) 29 psi (200 kPa, 2.0 kg/cm
32 psi (220 kPa, 2.2 kg/cm
T145/80R16
60 psi (420 kPa, 4.2 kg/cm
P225/60R16 97H
1
/ JJ
2
2
)
2
)
2
)
2
)