You should use synthetic engine oil that meets the same requirements given for conventional engine oil. When using synthetic oil, you must use oil of the same classification, viscosity and grade shown in this Owner’s Manual. Refer to “Engine oil”. Also, you must follow the oil and filter changing intervals shown in the “Warranty and Maintenance Booklet”.
NOTE
Synthetic oil of the grade and viscosity noted in chapter 12 is the recommended engine oil for optimum engine performance. Conventional oil may be used if synthetic oil is unavailable.
Free/Open Source Software Information
This product contains Free/Open Source Software (FOSS).
The license information and/or the source code of such FOSS can be found at the following URL.
http://www.globaldenso.com/en/opensource/ivi/subaru/