Quote:
Originally Posted by porsche tech
Nice looking car. Is it still R12?
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No, I put 134 in it many years ago. Surprisingly the old York still works. Back when I drove it a lot, I would have to put in about 1-1.5 cans in each summer. This time after sitting for 5 years it was reading zero pressure on my gauges so I simply pulled a vacuum for an hour. I let it sit for 15 minutes and it was still holding vacuum so I went ahead and recharged with about 3.5 cans of 134. We will see how long it lasts now.
My post on my AC from 19 years ago. 
https://forums.pelicanparts.com/porsche-911-technical-forum/226027-diy-134-conversion-sc-complete.html
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German autos: '79 911 SC, '87 951, '03 330i, '08 Cayenne, '13 Cayenne
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Men do not quit playing because they get old.... They get old because they quit playing.
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