What freon is in a 1994 Lincoln Continental Town Car?

A 1994 Lincoln Continental Town Car most likely used R-134a refrigerant. While R-12 was common in older vehicles, the transition to R-134a began in the early 1990s due to environmental concerns. By 1994, it was highly probable that R-134a was the standard. However, it's always best to verify by checking the sticker on the car's AC system or consulting a service manual.