There is a web site that can give you the pinpoint location of your low side port. As well as refrigerant & lubricant specs for any year, make and model vehicle.There is alot of help full information about your vehicles ac system. On the link below.
1 pound 14 ounces is the factory specs......
Aprox 30 oz.
Air conditioning system has a Freon capacity of five pounds. Most air conditioning recharge kits will tell you when the system is completely charged.
If it's an S-10 Blazer, it should take 2lbs if it has climate control and 1lb 1.14oz otherwise.
The amount of freon needed to recharge the air conditioning system in a 1999 Mercury Cougar can vary based on the system capacity and any existing leaks. It is best to consult a certified mechanic who can determine the correct amount needed for your specific vehicle.
Freon (R12) has not been installed in any vehicle since 1995.
2LB. 12OZ.
I believe it is 1.5 units.
The system will take 30 ounces of R134a freon.............
3.0 lbs total , make sure to add 6oz-8oz of oil to your system for compressor lubrication
as much as you need to untill the gauge gets to the right point.
1lb 3/4 of r134a
2 1/2 lbs.