Where do you put AC coolant in a 2000 Lincoln Navigator?

To add AC coolant to a 2000 Lincoln Navigator, locate the low-pressure service port, which is typically found on the larger of the two lines connected to the AC compressor. Remove the cap from the port and attach the refrigerant canister with the appropriate adapter. Make sure the engine is running and the AC is set to the maximum cool setting while adding the coolant slowly. Always check the vehicle's manual for specific details and refrigerant type to ensure proper handling.