This was my personal experience about using this product, for me it was effective, I have almost a couple of years of problems with my car overheating issue, after using this, my car never deals again bout overheating, even when I have stuck in heavy traffic or even on a long ride, I'm very happy and satisfied I've tried this product before deciding to change my entire engine, well actually this is my last resort if its fail I have probably spent more money to change my engine, but it's not, in fact, I've saved more:)

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