Ned, the mix of stuff that is now in your AC system will create an acid that will eat through every part of the system in short order. What may have started as a simple problem can end up with pulling the dashboard out to replace the evaporator, plus changing the hoses, the condenser, and the compressor. That's why people get so upset about the $40 "death kits."
Besides the fact that the system cannot now be evacuated without contaminating something.
82 300D Euro
12 Honda Pilot
14 Tesla Model S
Former MB: 86 190E 2.3, 87 300E, 80 240D
Chain Elongation References