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The story took a dark turn in the early 2000s when thousands of GM owners began discovering a thick, brown, mud-like substance—dubbed ""—clogging their radiators and eating through intake manifold gaskets. The technical culprit was often a combination of factors: buy dex cool engine coolant
The controversy led to massive class-action lawsuits where GM eventually settled, offering hundreds of dollars in reimbursements to affected owners. However, Dex-Cool isn't the "villain" it's often made
: If the coolant level dropped too low, the Organic Acid Technology (OAT) formula could react with air to form an acid that attacked engine components. The story took a dark turn in the
: Drivers who topped off their orange Dex-Cool with traditional green coolant inadvertently created a chemical reaction that turned the fluid into a thick "pudding," destroying the cooling system. The Aftermath and Modern Reality