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Drain about 1 gallon of coolant from radiator Follow upper radiator hose to engine housing Remove 2 bolts on housing--make note how thermostat is installed Clean both surfaces completely Install new gasket and thermostat Tighten both bolts evenly and securely Re-fill radiator slowly to prevent "airlock" Check for leaks Start engine with heater on Run to normal operating temp Check coolant level

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Q: How do you change the thermostat on a 1994 Oldsmobile cutlass supreme?
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