Question about 1991 Chevrolet Silverado 2500

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1991 C/K, 5.7, AC r134a conv. charge capacity? lb/oz?

1991 C/K, 5.7, AC r134a conv. charge cap?

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  • dlhop80 Jun 23, 2009

    3 lbs is the amount I used, blows ice, in Phx AZ. just was concerned may have passed the 85% of orig. r-12

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  • Chevrolet Master
  • 3,433 Answers

3 lbs.

Posted on Jun 23, 2009

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PAG Oil GM P/N 12378526 for United States
PAG Oil GM P/N 88900060 for Canada
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Usually it will take 2 or 3 cans of 134a to charge a typical American car's or light truck's a/c system.

There are about 454 grams per lb. of matter and each can is about 12 oz. (not 16 oz. = 1 lb.).

3 cans would be 3 cans x 12 oz. = 36 oz. or about 2 lbs. 4 oz.

If you round down to 2 lbs., then the grams is about 454+454 which is about 900 grams rounded down.

You could find the grams per ounce and multiply by 36.

454 /16 = 28.375

and 28.375*36=1021 grams for 3 12 oz. cans of refrigerant.


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