The a/c system has already been changed over to R134a I did use pag oil. The system started to developing the problems with retrofit from R12 to R134A. From leaking from hoses and pag oil with being in a humid climate early compressor related. In , my restoration I will be replacing all three A/C lines- hoses, besides the Compressor. The evaporator will be flushed and the condenser if I decied to . The condenser is in question but is the original and still good. My question is I would like to know if using, Medium Visocosity poe -ester oil charge with Ice 32,would this be exceptable ,with warranty, with me flushing the evapoator and condenser. I want this A/c to last alot longer this time.