The car overheats when I am driving on a hot day when the outside temp is over 90
and I have the AC on, I checked the temp gauge and from cold it goes up to approx 100 and then it drops to around 80. That is why I did not think it could be the thermostat, I have not replaced the fan clutch, or the water pump. Should I start from replacing the thermostat? and then fan clutch, or the pump first. What is the proper mixture for the coolant for this car?