Synthetic oil
Subaru Forester / Subaru Forester 2012-2024 Owners Manual / Maintenance and service / Engine oil / Synthetic oil
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” F12-4. 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.