It's important to note that:
* This is a general range. The specific operating temperature might vary slightly depending on factors like engine modifications, ambient temperature, and the type of coolant used.
* Your car's gauge might not be entirely accurate. It's best to use a reliable temperature gauge or scanner to verify the actual temperature.
* Never disregard warning lights. If your car's temperature gauge shows a significant increase or the "overheat" warning light comes on, pull over immediately and let the engine cool down.
If you're unsure about your Mustang's temperature, it's always best to consult your owner's manual or a qualified mechanic.