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.
Is DexCool the same as regular antifreeze?
Despite not being called antifreeze, it still accomplishes the same task, so you don't have to worry about replacing Dex-Cool for the winter months or anything like that. The main way to tell the difference between Dex-Cool and regular antifreeze is that Dex-Cool is typically orange.
Can I mix DexCool with regular antifreeze?
Yes, but you probably shouldn't. Dex-Cool is rated for 5 years between drain and refill. Conventional green coolant is not. Mixing them means you should follow the conventional coolant's 2-year schedule.
Which coolants cannot be mixed?
First, what's important to know is that many IAT and OAT coolants do not mix. In fact if they're added into a cooling system together the results can be catastrophic, creating a gelatinous substance that blocks the system and causes widespread damage to internal components.
What antifreeze is compatible with Dex-Cool?
Coolants compatible with Dex-Cool include other orange-colored, Dex-Cool compatible coolants made by brands like Prestone, Zerex, and Peak. Any coolant labeled as "Dex-Cool Compatible," "Orange," or "Extended Life" that uses Organic Acid Technology (OAT) can be mixed with Dex-Cool without negatively affecting performance, according to brands like Advance Auto Parts, Prestone, and O'Reilly Auto Parts.
Compatible coolants
- Prestone Orange Dex-Cool Compatible: This coolant is specifically designed to be mixed with Dex-Cool.
- Zerex DEX-COOL Antifreeze Coolant: This is an approved coolant that meets specifications and is compatible with other Dex-Cool products, say Prosource Diesel.
- Peak Orange Antifreeze and Coolant: This coolant is also compatible with Dex-Cool, notes AutoZone.com.
- NAPA Extended Life Orange DEX COOL Compatible Antifreeze: This is a compatible option available at NAPA Auto Parts.
- ShopPro Orange Dex-Compatible Antifreeze: Another compatible option, according to AutoZone.com.
Important considerations
- Do not mix with traditional green coolant: Mixing Dex-Cool with traditional green coolant is not recommended because they have different chemical compositions that can form a corrosive sludge.
- Check the label: Always check the product label to ensure it explicitly states it is "DEX-COOL Compatible" or "Orange."
- Use 100% compatible coolant for best results: While mixing compatible coolants is generally safe, using a single, high-quality, compatible coolant for a full system flush is ideal for long-term protection, especially if you have a vehicle that requires it.
- Use distilled water: If you are mixing a concentrate with water, use distilled water to prevent mineral deposits from forming in your system, according to Prestone.
