Subaru Outback 2011 Owner's Manual page 495

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Engine oil capacity:
Petrol engine models
Diesel engine models
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" F11-18.
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Cold tire pressure:
See the label located under the driver's door latch.
2.0 L models
2.5 L non-turbo models
2.5 L turbo models
3.6 L models
5AT models
6MT models
4.2 liters (4.4 US qt, 3.7 Imp qt)
4.3 liters (4.5 US qt, 3.8 Imp qt)
6.5 liters (6.9 US qt, 5.7 Imp qt)
5.9 liters (6.2 US qt, 5.2 Imp qt)