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AC system size

1427 Views 13 Replies 4 Participants Last post by  69307/350Chevelle
I have a '69 chevelle, going to vacuum test the system, I heard you should make sure you know the correct system size so you don't overcharge it, how can I find this information? Also, I'm sure I need about 36oz of esther oil total? I know some needs to go into the compressor, any other specific areas that I should put the oil in to get it started?
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First is the system 100% stock and empty of all 12 or 134 oil? If it is, just go by the book on 3-4 oz. in e-vap core-and follow through with the oil fill. Side note after filling the comp, Use a speed wrench to crank the comp. BY HAND (forward & reverse) to make sure you have no oil on the top of the pistons.
Reason being, The comp. will compress gas, NOT A LIQUID. Same as filling a cyl. up with oil in your car install the spark plug, NOW hit the starter.
Take your time an you will be " COOL ":thumbsup:
Bob
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