The engine in a 2011 Subaru Legacy 2.5 L typically takes about 4.7 quarts of engine oil during a standard change with a new filter.
The 2011 Legacy uses a 2.5-liter four-cylinder engine. This article explains the official oil capacity and how it translates into practical maintenance, helping owners plan purchases and avoid under- or over-filling.
Official capacity and practical notes
According to Subaru's specifications for the 2.5 L engine used in the 2011 Legacy, the oil capacity with a new filter is about 4.7 quarts (roughly 4.4 liters). This figure is intended for a complete oil change when the filter is replaced.
In real-world service, slight variations can occur due to the exact oil filter size, the method of draining, and how full you fill to the dipstick’s full mark. Always use the dipstick as the final check.
Below is the standard reference you should plan for during a routine oil change.
- 4.7 quarts (including filter) for a routine oil change with a new filter, using the recommended oil grade (typically 5W-30).
After pouring the oil, run the engine briefly, turn it off, wait a few minutes, and recheck the level with the dipstick, topping off as needed to reach the full mark.
Additional considerations
Oil type and change interval basics
Use oil that meets Subaru's recommendations—commonly 5W-30 in regions with typical climates. Whether you choose conventional, synthetic, or a synthetic blend, follow the owner's manual guidelines for change intervals to maintain engine health.
Bottom line for owners
Plan on about 4.7 quarts for a standard oil change with a new filter. Always verify the level after filling and adjust as necessary to stay within the manufacturer’s recommended range.
Summary: The 2011 Subaru Legacy 2.5 L engine oil capacity for a standard change is about 4.7 quarts with a new filter; check the dipstick to confirm and follow the manual for oil type and change intervals.
What kind of oil does a Subaru Legacy 2.5 take?
For example, a Subaru Legacy produced between 2013 and 2021 will need 0W-20 synthetic oil. By contrast, any Subaru Legacy produced between 2005 and '10, these models will use synthetic 5W-30.
How much oil does a 2011 Subaru Legacy 2.5 L take?
4.5 quarts
Oil Grade: SM
| Viscosity: | 5W-30 (All TEMPS) |
|---|---|
| Capacity: | 4.5 quarts (with filter). After refill check oil level. |
| Torque: | 31 ft/lbs (Oil Drain Plug) Install a new washer on the drain bolt. Only use an OE drain plug. |
| Notes: | (1) Synthetic oil is required. |
What year to stay away from Subaru Legacy?
Reliable versions of the Subaru Legacy include the 2025, 2009, and 2018 model years. Meanwhile, 2015 and 2010 Legacy models are known to have more issues.
What kind of oil does a 2011 Legacy take?
2010–2012 Legacy (5th Gen, early years): Check Trim—Many 2.5L Use 0W-20; Performance/Turbo and 6-Cylinder Use 5W-30.