Subaru 2011 Impreza Owner's Manual page 450

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Use only unleaded gasoline with an octane rating of 87 AKI or

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 octane rating" F7-3.

Fuel capacity:

16.9 US gal (64 liters, 14.1 Imp gal)

GAS STATION REFERENCE

Use only the following oils.

. ILSAC GF-4 or GF-5, which can be identified with the ILSAC

certification mark (Starburst mark)

. or API classification SN or SM with the words "ENERGY

For the complete viscosity requirements, refer to the following

. "Recommended grade and viscosity" F11-13

. "Recommended grade and viscosity under severe driving

conditions" F11-14

4.2 US qt (4.0 liters, 3.5 Imp qt)

Refer to "Tires" F12-5.

Engine oil capacity:

Cold tire pressure:

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