Subaru Outback Manuals 2020 Outback Owner's Manual | Page 586

GAS STATION REFERENCE S99AA & Fuel S99AA01 Use only unleaded gasoline with an octane rating of 87 AKI (90 RON) or higher. & Engine oil capacity & Fuel octane rating 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) & Engine oil S99AA04 Always use the SUBARU approved engine oil. For further details, please contact your SUBARU dealer. If the approved engine oil is unavailable, use the alternative engine oil described as follows. . API classification SN with the words “RESOURCE CON- SERVING” or SN PLUS with the words “RESOURCE CON- SERVING” . or ILSAC GF-5, which can be identified with the ILSAC certification mark (Starburst mark) For the complete viscosity requirements, refer to “Engine Oil” ☞P524. 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) S99AA05 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” ☞P483. & Cold tire pressure S99AA06 Refer to “Tires” ☞P528.