2006 Subaru Outback Owner's Manual - Page 425

GAS STATION REFERENCE Fuel: 2.5-liter non-turbo models Use only unleaded gasoline with an octane rating of 87 AKI or higher. 2.5-liter turbo models and 3.0-liter models Use premium unleaded gasoline with an octane rating of 91 AKI or higher. For temporary purposes if premium unleaded gasoline is not available, you may use regular unleaded gasoline with an octane rating of 87 AKI or higher. For optimum engine performance and driveability, it is required (for 2.5-liter turbo models), and recommended (for 3.0-liter models) that you use premium grade unleaded gasoline. tor Octane numbers and is commonly referred to as the Anti Knock Index (AKI). Refer to "Fuel" section in this manual. Fuel capacity: 16.9 US gal (64 liters, 14.1 Imp gal) Engine oil: Use only API classification SM with the words "ENERGY CONSERVING" and the ILSAC certification mark (starburst mark) displayed on the container. Engine oil capacity: 2.5-liter models: 4.2 US qt (4.0 liters, 3.5 Imp qt) 3.0-liter models: 5.8 US qt (5.5 liters, 4.8 Imp qt) Fuel octane rating This octane rating is the average of the Research Octane and Mo- Cold tire pressure: Tire size Wheel size Pressure Front Rear Rear at trailer towing Temporary spare tire Size Pressure T135/80R16 33 psi (230 kPa, 2.3 kgf/cm2) 32 psi (220 kPa, 2.2 kgf/cm2) - T135/70D17 60 psi (420 kPa, 4.2 kgf/cm2) P205/50R17 88V 215/45ZR17 17 x 7 JJ 35 psi (240 kPa, 2.4 kgf/cm2) 33 psi (230 kPa, 2.3 kgf/cm2) 32 psi (220 kPa, 2.2 kgf/cm2) 30 psi (210 kPa, 2.1 kgf/cm2) 32 psi (220 kPa, 2.2 kgf/cm2) T155/70D17 P225/55R17 95V