I have tried to be carefull and just put in 85 percent of the 2.2 pounds of R12 that the tag on the radiator calls for... about 33 ounces of 134... do you count the sealer, oil and dye as part of the total ounces??? How do I check the ambient temp accross the condenser???? What will that show me and what should it be... the aux. fan came on just like it should... Jim

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James A. Harris