Toyota Repair: air conditioning, service connectors, toyota corolla

Question
What refrigerant does a 94 Toyota corolla use R-134 or R-12

Answer
1994 was the year most manufacturers switched refrigerants, it could be either one, there is an easy way to check, find the service connectors on the refrigerant lines under the hood and remove the cap on one of them, if it's R-12 the threads on the valve will be on the outside of the fitting, if it is 134 the threads will be on the inside of the opening on the fitting, a lot of times there will be a small yellow sticker under ther hood if it's 134 which states the capacity and type of refrigerant to use.