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Dexcool: The Source of Troubles

posted by  someone claiming to be ringlee on  Tue Feb 26 03:26 CST 2002 [RELATED]

Folks, I can't disclose the source, but it's a pretty good one. The problems with Dexcool originate with the Texaco Havoline formulation, which has demonstrated deposit formation and other anomalies in GM cars. Other "Dexcools" appear not to: you can buy a Prestone or Zerex product that meets the same specs but does not cause these troubles due to different formulations.

Zerex has some new coolants in development that look very promising; I'll post news as they announce it.








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    Dexcool: The Source of Troubles is Texaco

    uid 47's pic
    posted by  Paul S. on  Tue Feb 26 07:46 CST 2002
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Mon Sep 11 09:50 CST 2000
    [RELATED]

    aaaahah!

    That might explain why I haven't encountered too much nastiness with Prestone Extended life in the 240, 850, SR5....

    Although I think even the Prestone Dexcool and Volvo rad tank caps aren't real compatible. One overfillage, and one minor pressure relief and you got chunks in the little relief valve...
    --
    www.fidalgo.net/~brook4








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    Dexcool: The Source of Troubles

    posted by  someone claiming to be riverol on  Tue Feb 26 04:49 CST 2002 [RELATED]

    I have used Texaco Dexcool 50/50 with distilled water in the '86 760T for several years without trouble until recently. Now I keep topping up a pint and a time. I can see small leaks at coolant hoses to and from turbo and lower radiator hose at the engine. These are brand new hoses in the car a few months with new clamps kept tight, but I see small residues of dried coolant on the metal surfaces. There are probably other leaks because these seem too small for the amount of topping up I am doing. Unless I can find Zerez Glysantin soon, I will probably go back to Volvo coolant.








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      Dexcool: The Source of Troubles

      posted by  someone claiming to be ringlee on  Tue Feb 26 06:54 CST 2002 [RELATED]

      The Zerex product will be out soon: more later.








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        Dexcool: The Source of Troubles

        posted by  PropMgr on  Tue Feb 26 09:24 CST 2002
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        Is there a recommended way to flush and clean the system after using Dexcool?








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          Dexcool: The Source of Troubles

          posted by  someone claiming to be ringlee on  Tue Feb 26 09:38 CST 2002 [RELATED]

          You don't have to clean anything, just flush with water.







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