Is it OK to mix Dex-cool with regular coolant?
No, it is generally not recommended to mix Dex-Cool (a type of extended-life coolant) with regular coolant. Doing so can lead to compatibility issues and potentially damage your vehicle's cooling system. It's important to follow the manufacturer's recommendations for the type of coolant to use in your specific vehicle.
Explanation of the Issue
Dex-Cool is a long-life, silicate-free coolant that was introduced in the mid-1990s as an alternative to traditional green or yellow coolants. It is designed to last up to 5 years or 150,000 miles, whereas regular coolants typically need to be flushed and replaced more frequently. Dex-Cool has a different chemical composition than regular coolants, and mixing the two can cause problems.
When Dex-Cool is mixed with regular coolant, it can lead to the formation of a gel-like substance that can clog the cooling system. This can cause overheating, reduced heat transfer, and potentially damage the water pump, radiator, and other components. Additionally, the mixture may not provide the same level of corrosion protection as a properly maintained Dex-Cool system.
Recommendations
To avoid these issues, it's best to stick to the coolant type recommended by your vehicle's manufacturer. If you're unsure, check your owner's manual or consult with a qualified mechanic. If you've already mixed Dex-Cool with regular coolant, it's recommended to have the system flushed and refilled with the appropriate Dex-Cool or compatible extended-life coolant.
When performing a coolant flush or replacement, it's important to follow the proper procedures to ensure the system is properly cleaned and filled. This may involve using a coolant flushing agent or a specific coolant exchange machine.
Conclusion
In summary, it's not advisable to mix Dex-Cool with regular coolant, as it can lead to compatibility issues and potential damage to your vehicle's cooling system. Always use the coolant type recommended by the manufacturer to ensure the proper functioning and longevity of your vehicle's cooling system.
