To find the correct amount, you need to:
1. Identify your compressor: Find the compressor's part number (usually stamped on the compressor itself).
2. Consult a repair manual: A repair manual specific to your 1999 Chrysler LHS (such as a Haynes or Chilton manual) will list the correct oil capacity for your specific compressor. This is the most reliable source.
3. Contact a parts supplier: Provide them with your vehicle's VIN or the compressor's part number. They should be able to tell you the correct oil type and quantity.
Warning: Using the wrong amount or type of oil can severely damage your AC compressor. It's crucial to get this information right. If you're unsure, it's best to have a qualified technician handle the AC system service.