Posted 8/1/2013 21:57 (#3242875 - in reply to #3242851) Subject: Re: 4430 AC charging
Keymar, Maryland
I put 4 ounces in the comp. and 4 in the dryer. Then had the vac on it for an hour and shut the vac off and shut the valves on the gauges. Let it sit probably 2 hours and it had not leaked off.