Subaru Impreza Manuals 2018 Impreza Owner's Manual | Page 482

& Fuel: GAS STATION REFERENCE S99AA & Engine oil: S99AA01 Use only unleaded gasoline with an octane rating of 87 AKI (90 RON) or higher. & 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). & Fuel capacity: 13.2 US gal (50 liters, 11.0 Imp gal) S99AA03 S99AA04 Use only the following oils. . API classification SN 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” F12-4. & Engine oil capacity: 4.7 US qt (4.4 liters, 3.9 Imp qt) S99AA05 The indicated oil quantity is only a guideline and is est imated 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” F11-8. & Cold tire pressure: Refer to “Tires” F12-8. S99AA06