It was r-12. Thamk you because my 89 caddy Ac is kaput - probably has that also - and I will replace it with RS12A.
Freon' is a brand name for 'refrigerant', the type of refrigerant used on early 1990 Honda Civics was R-12. Now a license is required for someone to properly charge the system so many owners have switched to R-134a.
R12, which is very expensive. Have it changed over to a newer refrigrant.
It is R134a. Please under NO circumstances use the refrigerant that has stop leak added. If you have to take it to a repair shop and need repairs, it will ruin the equipment that is used to recover the refrigerant. Also, you need to be exact in the amount that is in the system. There should be a sticker under the hood with all of the information on it.
Originally R-12 Should be converted to R134
Your condensor outside , where the compressor is . should have an information plate showing the type of refrigerant used
Unless it has been converted to R134, the OEM refrigerant installed in 1991 was R12 Freon. I suggest you have it converted to R134 if it has not already been done.
R 134 a
you can buy the right refrigerant over the counter at checker auto or auto zone, the correct refrigerant is 134a