Subaru Impreza Manuals 2023 Impreza Owner's Manual | Page 498

& Fuel
S99AA01
Use only unleaded gasoline with an octane rating of 87 AKI ( 90 RON ) or higher .
& Fuel octane rating
GAS STATION REFERENCE S99AA
& Engine oil
S99AA02
! RON
S99AA0201
This octane rating is the Research Octane Number . ! AKI
S99AA0202
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 ).
& Limit of ethanol content
S99AA09
No more than 15 %
& Fuel tank capacity
S99AA03
13.2 US gal ( 50 liters , 11.0 Imp gal )
S99AA04
Use only the following oils . . API classification SN with the words “ RESOURCE CON- SERVING ”, SN PLUS with the words “ RESOURCE CONSER- VING ” or SP with the words “ RESOURCE CONSERVING ” . or ILSAC GF-5 or GF-6A , which can be identified with the ILSAC certification mark ( Starburst mark )
For the complete viscosity requirements , refer to “ Engine oil ” ☞12-4 .
& Engine oil capacity
S99AA05
4.7 US qt ( 4.4 liters , 3.9 Imp qt )
The indicated oil quantity is only a guideline and is estimated based on a case when the engine oil is changed with an oil filter . After refilling the engine with oil , the oil level should be checked using the oil level gauge . For more details about maintenance and service , refer to “ Engine oil ” ☞11-8 .
& Cold tire pressure
S99AA06
Refer to “ Tires ” ☞12-7 .