You mix a certain amount of water with a certain amount of Ethelyene Glycol (I think I read somewhere 50-50 blend produces the best results)
Water alone is not used as coolant for automobiles.
your cars radiator has busted
NO! That would be dangerous. Cars' coolant systems are pressurized, so if you open the radiator cap while the engine is running, it will spray HOT radiator fluid (water mixed with ethylene glycol, usually) all over you, and sometimes drain the radiator of coolant.
When discussing the use of freon (or chlorofluorocarbon as it is known) it usually refers to refrigeration and air conditioning. When talking about cars, freon gas is used in the Air conditioning unit. It it sometimes used by racing cars in the radiator in leu of regular coolant (or anti-freeze) but this is not a common practice. On regular cars, coolant is an oil based product placed in the cars radiator and reservoir diluted with water. It's function is to allow the radiator fluid (coolant and water), to be heated and cooled beyond the natural point of water to aid in the cooling of the cars engine.
The coolant capacity of a radiator in a 1986 Chevy Cavalier is 10.3 quarts. You can use any standard radiator fluid that's made for all makes and models of cars.
Low coolant, check radiator and resevoir, if its nit low there is a low coolant sensor that may be bad , this is a knon issue on these cars, sensor is located about 2-3 inches down under the radiator cap on passengersid
The overflow hose, that carries coolant from the radiator to either a reservoir on modern cars or to the ground on older cars.
I just did a radiator swap on my 1991 Range Rover The radiator cost $300 and took me about 1hr to fit it. If your radiator is rare it may be cheaper to have it repaired by having a new core fitted. If you would like to see how to fit a radiator I made a video about fitting mine it ay help you. @makerepairbin
Don't! Most cars have a reservoir for radiator coolant ... add liquid to the reservoir. Opening the radiator cap introduces air into the sealed system ... you don't want air bubbles in the cooling system.
Do this when the engine is cold only. First, remove the radiator cap. Then, locate the lower radiator hose. Unfasten this from the radiator. The old coolant will come out. Wait until the coolant has all come out. Then fasten the radiator hose again, make sure it is tight. Pour the new coolant into the radiator. Then, start the engine and let it idle. Pour more coolant into the radiator until it is almost full. Leave a space of 1 cm or so as the hot water will expand in the radiator and needs more space than cold water. Then, replace the radiator cap. Make sure the radiator hoses are not cracked or leaking. Check the coolant every week on older cars, at the same time as you check the engine oil level. Be careful with this, as the pistons will seize in the cylinders if the cooling system runs dry or even partially dry.
A specially designed Radiator Cap makes the radiator pressurized. The caps releases the extra pressure and expanded coolant into a small tank, and sucks the dispelled water back in the radiator when the engine cools condensing the coolant. This guarantees no loss of coolant and saves you from checking and refilling the radiator daily like the old cars without pressurized radiator. Newaz.
Most cars should be able to handle this themselves, older cars you use a small hand pump to suck air out from either the radiator cap or the coolant tank cap respectively.