This depends on the rating of the thermostat. Any where from 165 to 185 degrees is good.
In short no. Your cars cooling system is a sealed unit therefore it should not use any coolant whatsoever no matter the ambient temperature.
It is measured in Fahrenheit on US cars, and boiling temperature is 212°F. The scale indicates coolant temperature and over 200 would mean overheating, as steam could form in an unpressurized system.
Yes this is a safety precaution for the system to not allow the A/C system to work when the --- appear in the coolant temperature. Replace the coolant temperature sensor to get this --- to start displaying the temperature again.
The temperature sensor for the coolant system is located on the front of the engine. The exact location of the coolant temperature sensor is dependent upon the year of the engine.
A coolant system temperature sensor controls it. : CHILTON calls it the cylinder head temperature sensor. Some after market manufacturers call it the coolant temperature sensor. These are equivalent.
Yes if the thermostat doesn't close coolant will not reach normal operating temperature - therefore vehicle will run cold and not produce adequate cabin heat
The coolant temperature sending units are near the thermostat housing. The small one is for your temperature guage, the larger one is for the EEC system.
Yes, if the coolant is still clean and has not been in the system for long. But if you are changing the coolant at the recommended mileage of your cars manual then it should not be reused.
It's alright as long as the temperature of the air outside does not fall below freezing. Most cars have a 50/50 mix of antifreeze/water anyways. If the temperature does fall below freezing and all you have in the coolant system is water, it will cause a lot of damage to the engine and coolant system (it will freeze and expand, tearing hoses and could potentially damage internal components of your engine, such as the head gasket).
The engine coolant temperature sensor is probably at fault.
Valvoline MaxLife coolant.
The average coolant temperature for a Cadillac should typically range between 190-220 degrees Fahrenheit when the engine is at operating temperature. It's important to refer to the specific model's owner's manual for the exact temperature range.