Fuel Octane Rating - Subaru 2005 Legacy Owner's Manual

Fuel:
! 2.5-liter non-turbo models
Use only unleaded gasoline with an octane rating of
87 AKI or higher.
! 2.5-liter turbo models and 3.0-liter models
Use premium unleaded gasoline with an octane rat-
ing of 91 AKI or higher. For temporary purposes if
premium unleaded gasoline is not available, you
may use regular unleaded gasoline with an octane
rating of 87 AKI or higher. For optimum engine per-
formance and driveability, it is required (for 2.5-liter
turbo models), and recommended (for 3.0-liter mod-
els) that you use premium grade unleaded gasoline.

! Fuel octane rating

This octane rating is the average of the Research
Cold tire pressure:
Tire size
Wheel size
Pressure Front
Rear
Rear at trail-
er towing
Temporary Size
spare tire
Pressure
GAS STATION REFERENCE
P205/55R16 89H
16 x 6.5JJ
32 psi
2
(220 kPa, 2.2 kgf/cm ) (240 kPa, 2.4 kgf/cm
30 psi
2
(210 kPa, 2.1 kgf/cm ) (230 kPa, 2.3 kgf/cm
–
T135/80D16
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:
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 certification
mark (starburst mark) displayed on the container.
Engine oil capacity:
2.5-liter models: 4.2 US qt (4.0 liters, 3.5 Imp qt)
3.0-liter models: 5.8 US qt (5.5 liters, 4.8 Imp qt)
215/45ZR17 P225/60R16 97H
17 x 7JJ 16 x 6.5JJ
35 psi
2
)
33 psi
2
)
T135/70D17
60 psi (420 kPa, 4.2 kgf/cm
P225/55R17 95V
17 x 7JJ
32 psi (220 kPa, 2.2 kgf/cm
30 psi (210 kPa, 2.1 kgf/cm
32 psi (220 kPa, 2.2 kgf/cm
T155/70D17
2
)
2
)
2
)
2
)