What lubricants can be used with HFCs?
A) Ethylene glycol and propylene glycol B) Polyester and rayon
C) Mineral oil and alkyl benzene D) Polyalkylene glycol and polyol ester
Question 2
The refrigeration oil most commonly used with CFCs and HCFCs is:
A) Polyalkylene glycol. B) Polyol ester.
C) Mineral oil. D) Alkylbenzene.