How can you tell whether you have a r12 or r134a ac system also what does everyone think of the diy charge kits 96 Saturn sl 19l?

Answer 1

amount of Refrigerant is criticalUmits with r-12 Fittings for low (Blue)and High (Red) are normally same size, however those of r-134a fittings are different and the are not even remotly similar to those of r-12. There are other things that can help but is better to let a technician work it out.Charging a system is not that simple because the amount of refrigerant is critical, we are talking of Fluid Oz.Jaime