What type of freon the a 1992 lexus es-...

R22 you fill it like this the compressor has two hoses coming out of it and one of the hoses/lines will go towads the radiator to the condeser the other will go towards the firewall,,under windshield ,this is the one with the low side service port it will be the small port on the larger line/hose the other one is a large port on a small liquid line/hose,,,,the small port is the one u will need to hiook up to ,on the large line/hose