How do you add freon to my 1996 3000 gt Mitsubishi car?

To add Freon to your 1996 Mitsubishi 3000GT, first ensure the engine is off and the AC is set to the maximum setting. Locate the low-pressure service port, which is typically on the larger AC line, and remove the cap. Attach the refrigerant can to the port, following the instructions on the can. Start the engine, turn on the AC, and slowly release the refrigerant into the system while monitoring the pressure gauge on the can.