PeachParts Mercedes-Benz Forum - View Single Post - adding R-12 to AC system on 300SD

dannym · #7 06-23-2006, 08:51 AM

Hey,
Your question #1 is the key to your answer. There is no way to know how much oil to add because you have no way of knowing how much oil is left in the system.
I don't think I need to tell you what the lack of oil will do to your compressor and adding too much oil is just as bad.

The proper way to fix it would be to find the leak, fix it, flush the system, pull a vacuum and recharge with the proper amount of oil and refrigerant.

What you can do is put some R-12 in and look for the leak. When the charge gets low again that it doesn't work then you can go on to making the proper repairs.

Danny