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Use it or loose it? Forums > > Use it or loose it? Use it or loose it?
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Nissan Z Nissan 240Z, 260Z, 280Z, 280ZX, 300ZX, 350Z, 370Z, Discussion Forum

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Old 06-16-2011, 06:20 PM
big Dawg
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Default Use it or loose it?

I have a 1990 300ZX that I bought new in 1989. It has 180,000 miles on it and has not been my daily driver for a number of years. I may only put 400 to 500 miles a year on it. It still runs like the day I got it!
I had to have my AC serviced because it has developed a small leak in the compressor and discharge hose. The AC guy said that I really need to use it more often so that the seals don't degrade anymore.
My question is...what if I start up the car every weekend and run it with the AC on full blast for 15 minutes at a time. It is in my garage so there is no concern of overheating out in the bright sun (obviously with the garage door up). Will that be enough time each week to help the AC?
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Old 06-18-2011, 03:26 PM
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Will that be enough time each week to help the AC?
Yes, no only for the A/C but for the engine seals and battery charge.
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Old 06-18-2011, 04:58 PM
big Dawg
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Thanks for the info.
By the way, it has a very small leak that took 2 years to loose 1lb of freon.
To repair the compressor and discharge hose leaks will cost over $1,000. Since I put so little miles on it these days, I figured I would just go to AutoZone or Pep Boys and by a charge kit and do it myself as needed. My Z was retrofitted with R134A so I'm not worried about R12 cost or recovery.
2 questions:
1. Do the recharge freon cans include PAG oil since I would assume some of the lubricant will escape with the freon?
2. Has anyone tried any of the stop leak products to advise whether it really works or just makes things worse...a whole lot worse.

Last edited by big Dawg; 06-18-2011 at 05:00 PM.
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