How much refrigerant does a car need?

by Cassandra Cochrun According to the Environmental Protection Agency, Freon isn't available in the United States anymore because of its adverse effects on the environment. read more

I just put a whole 12oz can in and the pressure didn't change at all. It was not empty to begin with, I just wanted to top it off since my car is 7 years old. Update: Sorry, my car is a 2000 Pontiac Firebird. I'm using a cheap gauge from the auto parts store. read more

If the needle on the gauge is below the range your system needs refrigerant. If it is above the range then your system is overcharged or possibly has some other serious problem. If that is the case you will need the help of a qualified technician. Checking the Pressure— Taking a pressure reading is a lot like checking the pressure on your car tire. read more