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I have a 97 Mustang with a 4.6L engine. The A/C isn't as cold as it ought to be (and I'm in Nevada so I need it).

Could someone with experience recharging their system tell me how many ounces of recharge oil and refrigerant they used? I've recharged my Escort's A/C before so I have the tools, etc, just wanted to get an idea how much I should buy of each, keeping in mind I already discharged the whole system (oops).

Thanks for the help.

Shannon
 

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When you discharged the 97, did you blow the charge all at once and dump the oil in the process or was it a slow release and not much oil was lost? If it was a slow release than little oil was lost and the system can tolerate a loss of a small amount of refrigerant oil. When the charge was lost did the system sit with a open hose or fitting allowing air to get into the system?

Under the hood there is a data plate that will tell you how much refrigerant the system holds and what type refrigerant it uses. If the system has been exposed to ambient air than it should have a new dryer installed and a vacuum pulled on the system. If you ruptured a line or popped one off and let the oil blow everywhere than you will have to figure out how much oil is needed and I do not have that info. On the vintage compressors you could take out a plug on the side of the compressor and insert a dip stick to actually measure the oil level. Good luck. John
 

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As long as the system didn't sit open to the air you should be able to just buy the cans of 134A that have the right amount of oil per freon charge. (its all in there) just check the tag under hood and get the right amount according to the tag and install.
 
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