1993 GMC Safari Owner's Manual - Page 303

Air Conditioning Refrigerants Not all air conditioning refrigerants are the same. If the air conditioning system in yourvehicleneedsrefrigerant,besuretheproperrefrigerantis used. If you'renotsure,askyourGMdealer. Air Conditioning Refrigerant Capacity TYPE R-12 R-12 C-60 C-69 QUANTITY SYSTEM 3.00 Ibs. (1.4 kg) 3.75Ibs. (1.7 kg) TO239 Crankcase QUANTITY Without Filter ENGINE VINCODE 4.3L Z 4 Quarts(3.8Liters) w 4Quarts(3.8Liters) 4.3L All quantitiesareapproximate. Afterrefill,thelevel MUSTbechecked. I Filter With 4.5 Quarts(4.3Liters) 4.5 Quarts(4.3Liters) Fuel Tank TYPE Standard Quantityisapproximate. QUANTITY 27 Gallons(102Liters) TO187 6-65