[spacemanspif]

If Miller's Focus has the same Duratec as my 07, the cost is in the labor. The stat housing is burried under the intake manifold. I'm sure the mechanic knows of tricks to change the stat without pulling the intake but the service department still charges the time recommended by Ford for the job.

Also, with the fan on max hot from the moment the car is started, it will take a long time to warm up the engine as the heater core is pulling out any bit of heat the engine is making as soon as it's made. My Saturn was the same way; would only reach like 120degrees if the heater was never turned off. When my windows need to be scraped, I start the car and make sure the heater is off so that the engine retains whatever amount of heat it creates, enabling the engine to warm up faster and deliver me better heat when I'm done and need to clear the inside of the windshield.