The amount of oil you need depends on the engine in your 2008 Impala. The model offered three engines, with different oil capacities: about 4.5 quarts for the 3.5L and 3.9L V6s, and about 6 quarts for the 5.3L V8 in the SS. Always confirm with your owner’s manual or the under-hood oil sticker.
Engine options and their oil capacities
The 2008 Impala was offered with multiple engines. Here are typical oil capacities for a full oil change, including a new filter.
- 3.5L V6: Approximately 4.5 quarts (about 4.3 L) of oil with the filter installed.
- 3.9L V6: Approximately 4.5 quarts (about 4.3 L) with the filter installed.
- 5.3L V8 (Impala SS): Approximately 6 quarts (about 5.7 L) with the filter installed.
Note: Actual capacity can vary slightly by model year, engine variant, or filter choice. Always verify the exact specification in the owner's manual or on the under-hood oil capacity sticker.
Oil type and maintenance tips
Use the oil grade recommended for your engine; for most climates, 5W-30 is commonly suitable. Follow the dipstick and full-mark indicators to determine the precise fill level.
Steps to check and top up oil
- Park on level ground, engine off. Wait several minutes for the oil to settle.
- Open the hood, locate the dipstick, pull it out, wipe it clean, reinsert, and pull it again to check the level.
- If the level is below full, add oil in small increments (about 1/4 to 1/2 quart at a time), recheck with the dipstick, and repeat until near the full mark.
- After reaching the proper level, run the engine for a minute, turn it off, and recheck to ensure the level remains within the acceptable range.
Do not overfill; too much oil can cause engine damage. If you’re unsure, consult a professional mechanic.
Summary
Conclusion: For a 2008 Chevy Impala, oil capacity varies by engine: about 4.5 quarts for the 3.5L and 3.9L V6s, and about 6 quarts for the 5.3L V8 (SS). Always refer to the owner’s manual or the under-hood label for the exact specification and use the recommended oil grade (commonly 5W-30).