For the 2008 Impala, oil capacity depends on which V6 engine is installed. The 3.9-liter V6 requires about 5 quarts of oil with a new filter, while the smaller 3.5-liter V6 needs roughly 4.5 quarts. Always verify the exact figure in the owner's manual or on the under-hood label for your specific vehicle.
Engine options and their oil capacity
The 2008 Impala offered two V6 engines. Here are the typical oil capacities for each, including the filter.
- 3.9-liter V6: approximately 5 quarts (4.7 liters) of oil, with the filter installed.
- 3.5-liter V6: approximately 4.5 quarts (4.3 liters) of oil, with the filter installed.
These figures represent standard fill levels. If you’re topping off or replacing the oil, add oil gradually and recheck the level with the dipstick to reach the full mark.
Oil type and maintenance tips
Beyond capacity, using the right oil grade and following regular maintenance is essential for engine longevity. The following guidelines apply to most 2008 Impala V6s, but always confirm with the manual for your exact model.
- Oil viscosity: typically 5W-30 for most climates; use the grade recommended in your owner's manual.
- Oil type: conventional 5W-30 or synthetic blend is commonly acceptable; synthetic full-synthesis is acceptable if preferred.
- Oil filter: use an OEM or equivalent filter when changing oil.
- Change interval: conventional oil is commonly changed every 3,000–5,000 miles; synthetic oil can extend to roughly 5,000–7,500 miles, depending on driving conditions and manufacturer recommendations.
Always consult the owner's manual or a trusted mechanic for exact intervals and oil type tailored to your vehicle’s trim and climate.
How to confirm your engine model
If you’re unsure which V6 your Impala has, check the VIN or the engine code under the hood, or refer to the owner’s manual. The 3.9L is the larger option and generally requires more oil than the 3.5L.
Summary
Bottom line: The 2008 Chevrolet Impala’s oil capacity depends on the V6 engine: about 5 quarts for the 3.9L and about 4.5 quarts for the 3.5L, each including a new oil filter. Use the recommended oil grade, select a compatible filter, and follow established change intervals to keep the engine healthy. Always verify exact numbers for your specific vehicle.