Ok here is the deal I recently purchased a 2001 ford Taurus 3.0 v6 ( not dohc or flex just plan old Vulcan 3.0) cars runs fine not over heating no noises but I have a small concern the cars heater will run fine for the most part but when I turn the heater on the cars engine temp drops and then warms back up which leads to the heater overall temp to fluctuate I have flushed the entire cooling system and replaced with new coolant plus replaced the thermostat with a OEM Replacement plus yes I used a new gasket it is better but not completely what if anything can be done
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