Subaru Legacy Manuals 2023 Legacy Owner's Manual | Page 618

& 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
2.5 L models : no more than 10 % 2.4 L models : no more than 15 %
& Fuel Tank Capacity
S99AA03
18.5 US gal ( 70 liters , 15.4 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 ” FP562 .
& Engine Oil Capacity
S99AA05
2.5 L models : 4.4 US qt ( 4.2 liters , 3.7 Imp qt ) 2.4 L models : 4.8 US qt ( 4.5 liters , 4.0 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 an oil level gauge . For more details about maintenance and service , refer to “ Engine Oil ” FP521 .
& Cold Tire Pressure
S99AA06
Refer to “ Tires ” FP566 .