So I知 working on a 1992 monico the compressor and system is R-12 and it appears to be all leaked out ☹️. So ? Do you convert it to 134-A or scrap it and run the generator and the cruse air down the highway ? I知 not sure about the cost to convert yet ? But I got a 16 page report from prevost on how to do it and I知 not sure it痴 worth it ? My cruse air units are ok !