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Is prestone dex cool anti freeze okay - 1999 Oldsmobile Cutlass

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Some people say it causes deterioration of gasket materials, which in turn causes leaks in the cooling system. I, personally, switched to a compatible green antifreeze. Dex cool has been known to cause clogging in the radiator and heater core. The decision to use it or not is up to you. It is the recommended antifreeze for GM cooling systems. There are probably just as many mechanics that say it is ok, as there are that says it is no good.

Posted on Mar 20, 2011

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