Dex-Cool, GM-approved orange organic-acid coolant (OAT) used in a 50/50 mix with distilled water. Premixed Dex-Cool options are commonly available from retailers.
The question concerns the exact coolant specification for a 2013 Malibu, including whether to use premixed or concentrated formulas, how to mix, and how often to replace it. The following guide explains the recommended product, mixing ratios, and maintenance practices to keep the cooling system functioning properly.
What coolant to use in the Malibu
GM’s Dex-Cool Extended Life coolant is the standard recommendation for most 2013 Malibu models. It is an orange, silica-free coolant designed for the engine cooling system and is intended to provide longer service intervals when used correctly.
Key characteristics to know before purchasing or draining the system:
- Type: Dex-Cool Extended Life (OAT) coolant, typically orange in color.
- Color guidance: While orange is a strong indicator of Dex-Cool, always verify the product label to confirm Dex-Cool compatibility.
- Mixing guidelines: Use a 50/50 mix with distilled water, or buy premixed Dex-Cool that’s ready to pour.
- Compatibility: Use GM-approved Dex-Cool or a coolant explicitly labeled as meeting GM Dex-Cool specifications. Do not substitute with green or other non-Dex-Cool formulations unless the product states compatibility.
- Service life: Dex-Cool is designed for longer intervals, commonly around 5 years or 150,000 miles, depending on conditions.
Conclusion: Use Dex-Cool or a GM-approved Dex-Cool equivalent, maintain the 50/50 mix, and avoid mixing with non-Dex-Cool coolants to protect the cooling system.
Maintenance and top-off guidelines
To keep the cooling system performing well, follow these practical steps:
- Check the coolant level when the engine is cold and top off with the same Dex-Cool type if needed.
- Use Dex-Cool in a 50/50 mix with distilled water, or use premixed Dex-Cool to avoid measuring the concentrate.
- If replacing, drain the old coolant completely, flush if required, and refill with Dex-Cool 50/50 (or premixed Dex-Cool).
- Inspect hoses, radiator, and reservoir for leaks or signs of deterioration during service visits.
- Avoid using tap water or mixing with non-Dex-Cool formulations unless the product explicitly states compatibility.
Conclusion: Following these top-off and replacement practices helps maintain proper cooling system performance and prevents deposits or corrosion.
Service intervals and monitoring
General guidance from GM suggests a Dex-Cool service interval of about 5 years or 150,000 miles for many models, though exact intervals can vary by climate and driving conditions. Always refer to the 2013 Malibu owner’s manual or a GM-certified service advisor for the precise interval and any regional recommendations.
- Plan a full drain and fill with Dex-Cool at the recommended interval (typically around 5 years / 150,000 miles).
- Consider a system flush if there are signs of deposits, sludge, or corrosion.
- During service, inspect hoses, clamps, radiator, and the reservoir for wear or leaks and replace as needed.
Conclusion: Adhering to the recommended Dex-Cool maintenance schedule helps protect the engine and cooling system over the life of the vehicle.
Summary
For a 2013 Chevrolet Malibu, the recommended coolant is GM Dex-Cool Extended Life OAT coolant. Use it in a 50/50 mix with distilled water, either as premixed Dex-Cool or as a concentrate properly diluted. Do not mix Dex-Cool with non-Dex-Cool or green coolants unless the products explicitly state compatibility. Follow the owner’s manual for the exact service interval, typically around 5 years or 150,000 miles, and perform periodic inspections of hoses and the reservoir to maintain cooling-system integrity. If in doubt, consult a GM-certified technician to confirm the exact specification for your vehicle and climate.