Subaru 2008 TRIBECA Owner's Manual page 409

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Fuel
Use unleaded gasoline with an octane rating of 87 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 "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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Cold tire pressure
Tire size
Wheel size
Pressure
Front
Rear
Rear at trailer towing
Temporary spare tire
Size
Pressure
GAS STATION REFERENCE
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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
6.7 US qt (6.3 liters, 5.5 Imp qt)
P255/55R18 104H
18 8JJ
2
33 psi (230 kPa, 2.3 kgf/cm )
2
32 psi (220 kPa, 2.2 kgf/cm )
2
32 psi (220 kPa, 2.2 kgf/cm )
T165/80R17
2
60 psi (420 kPa, 4.2 kgf/cm )