Quote Originally Posted by jingua_ph View Post
What about R502?
I dont reccomend R-502 because its a phased out CFC, yes you can use but the still applys to changing compressor oil and filters, because the system did have R-403b in it.

The cost on CFC 502 is expensive to. if you should devolp anothe refrigerant leak in the future you will have to incur the expensive recharge,

You will better off to convert to R-402a. this is my advise for your wallet and phase out laws.

regards R-T