R12 or R134A

[encryptshun]

Ok i bought a new AC compressor, and havent put any of the freon in yet. um question is which one do i buy? i know it may sound dumb but i have no clue R12 or R134a



***EDIT Ok NVM i did a search after this was posted.. oops i got my answer thanks anyways

 

[cub1947]

R-134a

You can use R-134A, IF you change the O-rings to the universal (green) type, flush the condensor, evaperator and lines (do it whilke they are apart to change O-rings) ,replace the dryer,vacuum the system and use the "universal" type oil. Unless you want to smuggle R-12 from Mexico, good luck finding any below thw price of gold. An FYI to anyone having AC problems or overheating when fans get worn, they can appear to run OK but run slower than design; also there is a PITA connector for the fan on GEN2's that can not only cause fan issues but disable the fuel pump. It is a two cionductor on the line going to the fan motor.

 

[itwonder]

A concern is the oil in the new compressor needs to be compatible with the refigerant you choose. What's in the new compressor, they usually have about 200cc of oil already in them? It should say in the instructions. If it came with PAG 46 oil , that is R134A compatible, but not R12 compatible. If that's the case, I would go with R134A. Install a new receiver/dryer. It's a good idea to flush the system out using Dura II Flush Solvent, NAPA PN TEM409889, but only if you have dry compressed air to really blow it out. To be extra safe, if the compressor has PAG 46 oil, you may want to drain it out and replace with a universal oil that will be compatible with R134 and any old bits of R12 oil that are still in the system. Estercool A/C Refrigerant Oil is one. Theoretically, you should replace the oriface tube in the liquid line with one optimized for R134A. But I'm told the R12 ones will work with slightly less efficiency. A true expert may chime in on this.

 

[encryptshun]

yeah cuz after reading that i am even more confused lol