Approximately 5 quarts for the common V6 models, and about 6 quarts for the V8-powered Impala SS. Always verify the exact amount for your engine using the owner's manual or the dipstick.
Engine options in the 2009 Impala
Knowing which engine your car has is essential, because oil capacity varies by engine size and configuration.
- 3.5L V6 (base/LS/LT trims): about 5 quarts with a filter
- 3.9L V6 (available on some trims in certain markets): about 5 quarts with a filter
- 5.3L V8 (Impala SS): about 6 quarts with a filter
Note: Oil capacity can vary slightly by production year, drivetrain configuration, and whether a filter is replaced. Refer to the owner's manual or a GM service bulletin for the exact figure for your vehicle's VIN.
Oil capacity by engine type
Here is the capacity breakdown by engine type to guide oil changes and topping up.
3.5L V6 and 3.9L V6
Both V6 engines share a similar oil capacity when performing routine maintenance with a filter replacement.
- Oil capacity: approximately 5 quarts with filter
For these engines, use the viscosity recommended in the owner's manual (typically 5W-30, but follow GM's guidance for your climate and driving conditions).
5.3L V8 (Impala SS)
The larger V8 requires more oil to maintain proper lubrication at higher engine loads.
- Oil capacity: approximately 6 quarts with filter
Again, verify the exact amount for your VIN and driving needs, and replace the oil filter during a change.
Summary
In short, the oil capacity for a 2009 Impala depends on the engine: about 5 quarts for the common V6 variants and about 6 quarts for the V8-powered Impala SS. Always consult the owner's manual, check the dipstick after a change, and use the oil grade recommended by GM for your specific engine and climate.