Subaru 2012 Forester Owner's Manual page 521

&
Fuel:
! Non-turbo models
Use only unleaded gasoline with an octane rating of 87 AKI
(90 RON) or higher.
! Turbo models
Use premium unleaded gasoline with an octane rating of 91
AKI (95 RON) or higher. If premium unleaded gasoline with an
octane rating of 91 AKI (95 RON) is not available, regular
unleaded gasoline with octane rating of 87 AKI (90 RON) or
higher may be temporarily used. For optimum engine perfor-
mance and driveability, it is required that you use premium
grade unleaded gasoline with an octane rating of 91 AKI (95
RON) or higher.
&
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" F7-2.
GAS STATION REFERENCE
&
16.9 US gal (64 liters, 14.1 Imp gal)
&
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
CONSERVING" or "RESOURCE CONSERVING"
For the complete viscosity requirements, refer to "Engine oil"
F12-5.
&
Non-turbo models: 5.5 US qt (5.2 liters, 4.6 Imp qt)
Turbo models: 4.4 US qt (4.2 liters, 3.7 Imp qt)
&
Refer to "Tires" F12-10.
Fuel capacity:
Engine oil:
Engine oil capacity:
Cold tire pressure: