Subaru 2001 Legacy Owner's Manual page 385

12. Reinstall the cover under the oil filter.
13. Pour the specified amount of engine oil through the filler neck.
Oil capacity:
2.5 liter models: 4.2 US qt (4.0 liters, 3.5 Imp qt)
3.0 liter models: 6.0 US qt (5.7 liters, 5.0 Imp qt)
14. Start the engine and make sure that no oil leaks appear around
the filter's rubber seal.
15. Run the engine until it reaches the normal operating temperature.
Then stop the engine and wait a few minutes to allow the oil drain
back. Check the oil level again and if necessary, add more engine oil.
B Recommended grade and viscosity
CAUTION
Use only engine oil with the recommended grade and viscosity.
Oil grade: API classification SJ or SH with the words "ENERGY
CONSERVING II" (if you cannot obtain the oil with SJ
or SH grade, you may use SG grade oil.)
or the new API certification mark (Starburst mark) dis-
played on the container.
API Service label
1
2
3
1
Indicates the oil quality by API designations
2
Indicates the SAE oil viscosity grade
3
Indicates that the oil has fuel saving capabilities
11-12
New API Certification Mark
(Starburst Mark)