HI WHAT TYPE OF FREON GOES IN A 1994 FORD TARAUS,MY CAR IS BLOWING OUT HOT AIR SO I WANT TO PUT SOME IN THERE BUT I DONT KNOW IF 12R OR 134R GOES IN THERE OR DOES IT MATTER BEING THAT IT IS BLOWING OUT HOT AIR MEANING THERE IS NONE INT THERE AT ALL. PLEASE LET ME KNOW .........THANKS