1999 Chevrolet Astro Owner's Manual - Page 314

yellowblue Front Axle Capacity Front Axle ...2.6 pint (1.2 L) Air Conditioning Refrigerant Capacity Type R-134a R-134a System C-60** C-69*** Quantity* 2.0 lbs. (0.91 kg) 3.0 lbs. (1.36 kg) Rear Axle Capacity Standard Rear Axle ...3.5 pint (1.7 L) Locking Rear Axle ...3.5 pint (1.7 L) *All quantities are approximate. Air Conditioning Refrigerants Not all air conditioning refrigerants are the same. If the air conditioning system in your vehicle needs refrigerant, be sure the proper refrigerant is used. If you're not sure, ask your dealer. Refrigerant should be added only by a qualified A/C technician. **Front A/C only. ***Front and Rear A/C. NOTICE: R-134a refrigerant is not compatible with R-12 refrigerant in an air conditioning system. R-12 in an R-134a system will cause compressor failure, refrigerant oil sludge or poor air conditioning system performance. 6-68