Q: Leaking coolant

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Changed waterpump front freeze plug thermostat and still leaking fluid

My car has 200000 miles.
My car has an automatic transmission.

In order to locate a leak, you will have to have the cooling system pressure tested to detect where the coolant leak is coming from. Have a mechanic pressure test the system and look for leaks at the intake manifolds and at the other freeze plugs. Make sure the oil of the engine does not have any water in it indicating the head gaskets are leaking coolant.

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