Rick's Free Auto Repair Advice

Posts Tagged: DexCool

Is DexCool bad

The truth about DexCool coolant Mechanics say they hate DexCool and blame it for all kinds of problems. Most aren’t the fault of DexCool. Here’s the REAL scoop on Dex-Cool and coolants in general. First some coolant history Most of the older green coolants were silicate based. The coolant’s job is to prevent freezing and cooling system corrosion. In the case of the green coolants, the silicates deposit a thin film of anti-corrosive material on metal surfaces to “PASSIVATE” them. There are two problems with silicate. First, it’s somewhat abrasive, … Read More

Is Chrysler antifreeze compatible with other types

New Chrysler antifreeze not compatible with other antifreeze types Chrysler has issued a TSB #07-004-12RevA regarding their new organic acid technology (OAT) coolant for 2013 vehicles. The new coolant is good for 10 years or 150,000 miles. The new coolant is purple. BUT, the bulletin warns about not mixing any other coolants with the purple stuff. And it’s not just so Chrysler can sell you their own brand. Chrysler has found that mixing coolants can accelerate corrosion in the engine and cooling system, develop an ammonia smell, and result in … Read More

Using the correct coolant matters

Using the correct coolant matters There are many different types and colors of antifreeze. But only one is right for your particular engine and using the correct coolant matters. Using the wrong antifreeze or mixing different types of antifreeze can damage your engine and cooling system. The correct coolant does three jobs • It lowers the freezing point of the cooling system in winter • It raises the boiling point of the cooling system in summer • It protects the engine and cooling system from rust and corrosion year round. … Read More

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