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5.0L (1979-1995) MustangTechnical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.
After driving my car for a while the temp was at 200 which is not normal... I looked at the rad overflow tank and hardly any coolent was in there.... I popped off the rad cap and it was filled to the top... what gives? [:@]
Just get a stock one, the guys at the part store can look it up for you. Make sure you put the new gasket in too, and don't put the thermostat in upside down!!! My buddy did it, somehow.