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The thermostat needs replacing any time you service the cooling system. You should also replace it if the engine is overheating, and you suspect it is defective. A blown head gasket will exhibit, certain symptoms. Coolant in the oil, white smoke from the tailpipe, overheating, air bubbles coming from the radiator, missing on one or more cylinders, a brown looking foam on the underside of the oil cap. A compression test will help to verify this.

2006-07-19 14:39:29
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