What is the Refrigerant capacity for 1999 379 peterbilt with sleep?

The refrigerant capacity for a 1999 Peterbilt 379 with a sleeper is typically around 24 ounces for R-134a refrigerant. However, it's essential to consult the owner's manual or a service guide for the exact specifications, as variations can occur based on the specific configuration and any modifications made to the vehicle's air conditioning system. Always ensure proper servicing by a qualified technician to maintain efficiency and safety.