Question about 1999 Chevrolet Lumina

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1999 Lumina 6-cylinder: which antifreeze can/must I use?

A simple question really: I need to add antifreeze to my 1999 Lumina, 6-cylinder.
In the past I've been warned to use only a special (and more expensive) antifreeze for this car (Dex-Cool???).

I have a gallon of Prestone Extended Life "for all makes and all models" the package promises.
Is it safe to use this in my car? Or am I better advkised to use the special one (Dex-cool???)?

Thanks.

Posted by on

  • luminex Dec 17, 2008

    Thank you very much--I appreciate your input, and have added the Dex-Cool.



    As a point of interest, I subsequently ran across an article that seems to suggest a different view:

    "7. Mixing a “green” coolant with DEX-COOL reduces the batch’s change interval to 2 years or 30,000 miles, but will otherwise cause no damage to the engine. In order to change back to DEX-COOL however, the cooling system must first be thoroughly drained and flushed."

    The article was summarizing a report given at the MACS 2001 Convention and Trade Show in Orlando by GM’s Jay Dankovich and Equilon Enterprises’ (Texaco) Stede Granger who had directed a 2-year study of thousands of DEX-COOL cooled vehicles.

    http://www.imcool.com/articles/antifreez...

    They seem to say that the only negative result of mixing a non-Dex-Cool with the Dex-Cool is that the "change interval" is reduced from 150,000 miles to 30,000 miles--otherwise no damage results.



    Any additional/other thoughts on this?



    Thanks again.

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If your car is supposed to take Dex-Cool, it should say somewhere in the front of the car under the hood, usually near the radiator or on it.

IF it does take Dex-Cool, do not use anything but that in your cooling system.
Mixing any other antifreeze with Dex-Cool causes them to react with each other and corrode your radiator and hoses with a rust-like material.

Posted on Dec 17, 2008

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