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Lv 611,456 points

Michael B

Favourite answers28%
Answers2,218

Been a mechanic for over 45 years, and have worked on every type of vehicle professionally, except aircraft...I don't claim to know it all, but I've been around...

  • Alright, let's get the final "definitive" answer to Dexcool...?

    I've been researching this whole Dexcool thing, and am beginning to see that there are several different issues (concerns) in the forefront...

    First, in my reading horror stories, a majority of "plaintifs" who got wordy enough let the cat out of the bag by stating that "low coolant levels in the radiator" (aka. "gasket failures, or leaks") happened first. GM apparently has used inferior manifold gaskets for 6 to 8 years (approx. 96 thru 2003 or 4). The evidence points more to poor materials than Dexcool...

    Soooooo...

    1. Will "accidentally" mixing "normal" antifreeze with Dexcool automatically sludge up the system?

    2. In your "professional" experience, are more failures in the cooling systems from loss of coolant first, as in gasket failures/lack of maintenance/relying on a claim of 100,000 to 150,000 miles?

    I would prefer GM techs, and mechanics who are ACTIVELY working daily with this, and those who have been doing so for at least 5 years...horror writers too, but stay factual...

    7 AnswersMaintenance & Repairs1 decade ago