Take a look at your schrader valves. If the threads are on the outside, it's an R-12 system. However, it is possible that it may have been converted to an R-134A system by the previous owner (assuming you're not the original owner). You should have a shop test the refrigerant for type and purity level.
Enough to recharge the system after the leak is repaired and no more.
you can use r134 freon add a/c oil
Its probably an R12, That's an expensive proposition from the point of R12 or conversion to R134. Get professional service, AC is not novice level stuff.
Total recharge is 1.68 Lbs
Go to Walmart or an auto parts store. Buy an a/c recharge kit for R134 freon coolent. Follow the directions on the can..
Purchase a recharge kit and a can or r134 from the auto parts store. Locate the low pressure port for the air conditioning ( usually close to the compressor ) it will have a screw on cap with an L on it and follow the directions on the kit. Dont worry the connector on the can will only fit on the low pressure side so you cant make a mistake.
R134
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.
Only if that is what is was built and designed to use.Only if that is what is was built and designed to use.
Buy a kit at Wal-Mart or auto parts comes with instructions
it could be either or if its R-12 it needs to be converted
FREON (R12) was banned beginning in 1996. Your vehicle contains R134, and as to how much. I suggest you seek a professional to repair the leak and recharge the system, as it is illegal to install refrigerant without repairing the leak.FREON (R12) was banned beginning in 1996. Your vehicle contains R134, and as to how much. I suggest you seek a professional to repair the leak and recharge the system, as it is illegal to install refrigerant without repairing the leak.