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70shortnphat · 04-07-2002, 08:58 PM

All a/c systems leak always.(on a molecular level). Just like the air pressure in your tires.
The amount of pressure in the system is directly related to the ambiant temp.The hotter it is out side the higher the pressure in the system. There is a formula for calculating what the high and low pressures should read on your system based on ambient temp.(have in a book somewhere).
The worst enemy of your system moisture.
The reaction of chlorofluorocarbons to moisture is hydrocloric asid.that is why if an a/c system has been exposed to outside atmosperes(no freon),you can get what looks like battery acid on the fitting and in side the system.

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1970 short bed fleetside

04-07-2002, 08:58 PM	#6
70shortnphat "See the U.S.A....." Join Date: Apr 2002 Location: Richmond TX. Posts: 269	All a/c systems leak always.(on a molecular level). Just like the air pressure in your tires. The amount of pressure in the system is directly related to the ambiant temp.The hotter it is out side the higher the pressure in the system. There is a formula for calculating what the high and low pressures should read on your system based on ambient temp.(have in a book somewhere). The worst enemy of your system moisture. The reaction of chlorofluorocarbons to moisture is hydrocloric asid.that is why if an a/c system has been exposed to outside atmosperes(no freon),you can get what looks like battery acid on the fitting and in side the system. ------------------ 1970 short bed fleetside __________________ 1970 short bed fleetside 1949 all origional chevy 3600 1974 camaro Richmond , Texas(just S.W.of Houston)