Info needed: How much oil for AC compressor

[AN/GSC-52]

I pulled the compressor and drained the old oil. How much oil is needed to reservice?Yes sticking with R12

Thanks

 

[BIGPSI]

i would do 8oz

 

[AN/GSC-52]

thanks

 

[standupjskiguy]

You are supposed to measure what drains out of the compressor and put approximately that same amount back in.
For example, for a Beretta, they say if less than 2 oz comes out, put in 2 oz. If more than 2 oz, put in what came out.
8 oz sounds like way too much but this is an 80s compressor and the Beretta is a 90s.

 

[BIGPSI]

You are supposed to measure what drains out of the compressor and put approximately that same amount back in.
For example, for a Beretta, they say if less than 2 oz comes out, put in 2 oz. If more than 2 oz, put in what came out.
8 oz sounds like way too much but this is an 80s compressor and the Beretta is a 90s.

never thought of it that way,but i put a compressor on my dads 98 trk and only put 2oz in it and it destroyed it. next one we put 8oz in and it still works perfect,been 5yrs

 

[AN/GSC-52]

The fill-what-drains idea sounds good unless you started with a low level. To late for that anyway I have no idea how much drained out.
I'm going with 8oz, that compressor is the size of a Vortech supercharger lol. Waiting on oil from Summit.. no stores carry it anymore. Glad i stashed some R-12.

 

[standupjskiguy]

went up into the attic and got the service manual.
Sounds like adding 8 oz would be too much but it's your car.

 

[BIGPSI]

looks like the manual says 6oz, but i was always told you should add 2oz every time you break the system.

 

[AN/GSC-52]

Thanks!
Summit delivered a qt today. enough to flush and fill with.