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International Automotive Technicians Network
Re: Dissecting Sushi . . . The A/C Digestive System
Posted to HVAC Forum on 12/14/2006

Colt POE oil acts as a solvent compared to mineral or alkybenzine oils. You really see it after doing a retrofit from say r12 to r134a. A few years ago I did a change out from r12 to r134a in a walkin cooler. Thought the system was clean until I had to open it... Login to read more.