I do not know much about the air conditioning system in my 1974 corvette. It has stopped blowing cold air. I do know you can switch from the R12 to the new refridgerant 134. What is involved in this process? I am have comon sense and can see how things work and are put together. But i need to know where to get the information or talk with someone. I have found out the compresssor has mineral oil as the lubricant and the new coolant has the synthetic lubricant in the coolant. Thankyou for your help.
you probably have a leak in your condensor mate
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