Sorry about that, I forgot the details. The car has 260000 miles and I bought it 3 months ago and no history. The fan clutch is working and I don't see any problems with the radiator (no leaks). Now with the cold season coming I just want to change the coolant (last change unknown, current coolant looks like distilled water) and the thermostat so I can check them off my TO DO list and get ready for winter. Also the temp gets a little higher with the AC on but I never reached 90 C so that's why I was thinking about the thermostat. As for heat inside the car I have hot air blowing inside in about 5 minutes after starting in the morning and driving.

All I wanted to know is the location of the thermostat and if any special precaution in changing it.

Thank you.