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How much refrigerant oil???

Booie

Well-known member
Joined
Jul 2, 2007
Messages
46
Location
Cheektowaga, New York, United
Corvette
1979 Dark Green L-48 Coupe
Anybody know how much refrigerant oil goes in my 79 AC system a line broke and oil went all over.now I need to refill and recharge system.
 

wishuwerehere82

Well-known member
Joined
Sep 6, 2003
Messages
2,314
Location
Rochester, NY
Corvette
Red '82 Coupe,Sebring Silver '98 Coupe
If you have already converted to R134A refrigerant, they have a mix of freon and oil in a can that you can use for your first refill. After that use the straight R134A to fill to the proper charge.
If you haven't converted from R12, you will have to replace it with Freeze12 or another substitute.
The system uses about 7 Oz of oil per total charge.
 

Booie

Well-known member
Joined
Jul 2, 2007
Messages
46
Location
Cheektowaga, New York, United
Corvette
1979 Dark Green L-48 Coupe
No I didn't convert and I was going to have the R-12 put back in Iwas told it is a lot colder than R134A. But didn't know how much oil it takes. Just 1 oz. Total or 1oz. per pound of R-12
Bruce
 

bradfordsvettes

Well-known member
Joined
Mar 28, 2001
Messages
549
Location
Boston, MA area
Corvette
jewel blue 61.cranberry 69 t-top.black rose 92
I would not add more tha a couple of ounces. If there is to much oil than there is not enough room for freon and the system will not work properly.You probably did not lose as much as you think but with the age and failure 2 ounces should be plenty just my 2 cents Steve
 

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