it depends on the actual model Nissan pickup, but most vehicles made after 1994 take R134 refrigerant. The refrigerant type and amount is listed in the owner's manual.
R134a
The 1999 Oldsmobile Alero does not have Freon in the A/C system. It contains R134 and not Freon which is R12. As I am sure you do not have the proper equipment to recharge the system plus the fact it is illegal to add refrigerant to a system with a leak, until the leak is repaired, take it to a professional and have the leak repaired. You have a leak or you would not need to add refrigerant.
2lbs of r-134 refrigerant 2lbs of r-134 refrigerant
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.
It contains no Freon. It contains R134 Refrigerant. If it is low, that means it has a leak. It is illegal to add refrigerant without first repairing the leak. Take it to a professional for repair and recharge.
A 1986 Ford Bronco II would use R12 unless it has been converted
It Should Use R12, That Was Factory On Them. It May Have Been Converted. Either Let A Good A/C Person Check It Out.
You do not want to buy Freon as it is very, very, expensive. Have the leak repaired, the system purged of all Freon R12 and the oil. Have it converted over to R134 refrigerant. You cannot just add R134 as the oil used in R12 is not compatible with R134. You will be money ahead by converting it.
The 1992 GMC Suburban came from the factory with R12 not R134. Unless it is has been converted to use R134 you cannot simply add R134. If it has been converted you need to have the leak fixed before adding anything. It is illegal to add refrigerant to any system without first repairing the leak. How much it will hold depends on how much leaked out.
Your car contains no Freon R12, it contains R134 which is not Freon. If you need to add refrigerant then you have a leak. It is illegal to add refrigerant without first repairing the leak. Take it to a professional and get the leak repaired.
It came from the factory with R12. Due to the high cost of R12, I would have it converted to R134.