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water wetter is the bomb. There used to be something called a "rad cap" that would replace your existing radiator cap with a new cap that had about a 6 to 8 inch spring dangling down from the center holding some strange device. The device is supposed to all but eliminate corrosion. I haven't seen these devices in a few years. Water wetter is great stuff though. I usually run around 90% water 10% antifreeze and 1 bottle of water wetter.

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