The 2007 Chevrolet Impala uses Dex-Cool, GM Genuine Dex-Cool orange long-life engine coolant, typically mixed 50/50 with distilled water.
In practice, the cooling system in a 2007 Impala is designed for Dex-Cool or GM-approved Dex-Cool-compatible coolants. It’s important to use the correct type and avoid mixing Dex-Cool with traditional green coolant unless a full system flush has been performed. Service intervals commonly cited by GM place Dex-Cool at about 5 years or 150,000 miles, but always consult the owner's manual for your exact vehicle configuration and regional guidelines.
Compatibility and options
Here are the main coolant options you can safely use in the 2007 Impala, with emphasis on Dex-Cool compatibility. The car’s factory fill is Dex-Cool, and GM-approved Dex-Cool-compatible HOAT coolants are acceptable substitutes.
- GM Genuine Dex-Cool orange long-life coolant
- Dex-Cool-compatible, GM-approved HOAT coolants labeled as compatible with Dex-Cool
Bottom line: Use GM Dex-Cool or a GM-approved Dex-Cool-compatible coolant and avoid mixing with green or other non-compatible coolants unless you’ve performed a full system flush and know the exact mixture requirements.
Maintenance and tips
When topping off or performing a full replacement, follow these guidelines to maintain cooling-system reliability:
- Ensure the engine is cool before opening the radiator cap or reservoir to prevent scalding.
- Use a 50/50 mix of Dex-Cool and distilled water, or purchase premixed Dex-Cool at the recommended concentration.
- Do not mix Dex-Cool with conventional green coolant or other types unless a complete flush has been done.
- If contamination or incorrect mixing is suspected, flush the cooling system and refill with Dex-Cool or a GM-approved Dex-Cool-compatible coolant.
Note: Dex-Cool is an Organic Acid Technology (OAT) coolant colored orange; always verify the label to ensure compatibility with GM’s Dex-Cool specifications.
Additional context
If you’re unsure which exact product to buy, ask a GM-trained technician or reference your vehicle’s VIN-specific maintenance guide, as there can be small variations by engine option (for example, 3.5L vs. 3.9L) or regional fill practices.
Summary: The 2007 Chevy Impala takes Dex-Cool or a GM-approved Dex-Cool-compatible HOAT coolant, typically in a 50/50 mix with distilled water. Use the correct Dex-Cool product, avoid mixing with green coolant, and follow GM’s recommended replacement interval for best results.