Use Subaru Genuine ATF-WS for the automatic transmission and Subaru CVT Fluid for the CVT. If your Forester has a manual transmission, refer to the owner's manual for the correct gear oil specification.
Transmission types in the 2011 Forester
In 2011, Forester models were available with either a traditional 4-speed automatic or a Continuously Variable Transmission (CVT) known as Lineartronic. The right fluid depends on which transmission your vehicle uses.
- Automatic transmission (4-speed): Subaru Genuine ATF-WS (World Standard) or an equivalent that meets Subaru's ATF-WS specification.
- CVT (Lineartronic): Subaru CVT Fluid (CVTF) that meets Subaru's CVTF specification. Do not use standard automatic transmission fluid in a CVT.
Using the correct fluid is essential for proper shifting, lubrication, and transmission longevity. If you are unsure which transmission your car has, consult the owner's manual or contact a Subaru dealer for confirmation.
How to verify which transmission your Forester has
Identify your transmission type so you purchase the right fluid by checking these indicators.
- Look at the gear selector and labeling on the shifter area; CVTs and automatics may be labeled differently depending on trim, but you’ll often see distinct CVT indicators or branding for Lineartronic.
- Consult the owner's manual or a label inside the glove box or under the hood; the manual lists the transmission type and the recommended fluid.
If you still aren’t sure, check the vehicle VIN through Subaru's official resources or call a Subaru dealer to confirm the exact transmission specification for your car.
Summary
For a 2011 Subaru Forester, the correct transmission fluid depends on the transmission type: use Subaru ATF-WS for automatic transmissions and Subaru CVT Fluid for CVTs. Always verify with the owner's manual or dealer to ensure you have the exact specification for your vehicle.