Subaru Forester Manuals 2015 Forester Owner's Manual | Page 545

& Fuel: GAS STATION REFERENCE & Engine oil: ! Non-turbo models Use only unleaded gasoline with an octane rating of 87 AKI (90 RON) or higher. ! Turbo models Use unleaded gasoline with an octane rating of 93 AKI (98 RON) or higher. If 93 AKI (98 RON) fuel is not readily available, unleaded gasoline with an octane rating of 91 AKI (95 RON) or higher may be used with no detriment to engine durability or driveability. However, you may notice a slight decrease in maximum engine performance while using 91 AKI (95 RON) fuel. If unleaded gasoline with an octane rating of 91 AKI (95 RON) is not available, refer to “Fuel requirements” F7-3. & 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” F7-3. & Fuel capacity: 15.9 US gal (60 liters, 13.2 Imp gal) Use only the following oils. . API classification SM or SN with the words “ENERGY CONSERVING” or “RESOURCE CONSERVING” . or ILSAC GF-4 or 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: Non-turbo models: 5.1 US qt (4.8 liters, 4.2 Imp qt) Turbo models: 5.4 US qt (5.1 liters, 4.5 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” F11-10. & Cold tire pressure: Refer to “Tires” F12-9.