[bandit0067]

Thanks Sheep, as I understand things, the original system used mineral oil and that oil is still displaced thru out the components . The replacement compressor contained 3 oz of oil, but did not say which . I am pretty sure it was PAG oil of some weight. I use a drop in R 12 replacement gas and it works great in several of my older cars. They say this gas will pickup and move both the new and old oils the same. Do you have any idea how much of this leak detecter oil I could add and NOT overfill the system. thanks....