I recently started my old 1991 Toyota Previa for the first time since last november. Of course the old steed started right up (w/ fuel stabilizer). Unfortunately, to my dismay, the A/C wasn't working. I charged the system up, and it began cooling right away. I used a canister that has dye in it to help find the leak. The leak is a small and slow one, so I'll need to drive the van for a couple of days to get the leak to show up. Until then, does anyone know if I will need to replaced lost lubrication oil due to the leak? It's an older R12 system converted over to R134a, but it had PAG oil mixed in to lubricate the older compressor. Should I add some PAG oil now after the recharge? Keep in mind the Toyota TSB calls for PAG oil when the system is converted over to R134a. But I have heard somewhere that the PAG oil does not leak out when the refrigerant leaks out. Can anyone verify this? I do not want to run the AC without lubricant oil for the duration of the leak detection driving period.
Thank you everyone.
Thank you everyone.