In short, the amount depends on the transmission type. The 2011 Forester’s automatic transmission typically requires about 11 quarts of ATF, while the 5-speed manual version uses roughly 2.6–2.7 quarts of gear oil.
The 2011 Subaru Forester was offered with two main transmission configurations in many markets: a traditional 4-speed automatic (4EAT) and a 5-speed manual. This article outlines the approximate capacities for both setups and notes how much fluid you'll typically drain and refill during service. For the exact specification for your VIN, always consult the owner's manual or a Subaru dealer.
Automatic transmission (4EAT) in the 2011 Forester
Before listing the capacities, note that servicing this transmission involves several common scenarios—pan drop with filter change, or a full flush. Use these figures as a guide for planning your service.
- Total fluid capacity (including torque converter): about 11 quarts (roughly 10.5–11.0 liters).
- Pan drain and filter replacement refill amount: typically about 4–5 quarts to bring the level up after the drain.
- Full flush capacity: approximately 11–12 quarts, depending on whether a complete flush or multiple fills are performed.
Concluding guidance: these numbers can vary slightly by model year, VIN, and transmission condition. After a fill, drive the vehicle to circulate the fluid and then recheck the level, topping off as needed to reach the full mark on the dipstick.
Manual transmission (5-speed) in the 2011 Forester
For the 5-speed manual configuration, the gear oil capacity is much smaller and straightforward to plan for during maintenance.
- Total capacity: about 2.6–2.7 quarts (approximately 2.5–2.6 liters).
- Recommended fluid: 75W-90 GL-4 (or Subaru-recommended manual transmission oil).
Concluding guidance: always verify the exact capacity for your specific manual transmission using the owner’s manual, and check the level with the transmission warm to ensure proper adjustment.
Summary
The 2011 Subaru Forester’s transmission fluid needs vary by configuration. Automatic 4EAT owners should budget around 11 quarts for a full refill (more if doing a complete flush), while manual 5-speed owners should plan for about 2.6–2.7 quarts. Always confirm exact specifications for your vehicle’s VIN and follow the manufacturer’s service procedures to ensure proper transmission function and longevity.