Hello, I have a 91 300E in which the a/c stopped blowing cool air. Brought it to the MB dealership and they recharged the system and said they checked for leaks and saw none. It cost approx. $300. The air conditioner worked after that. The car was not used for 2 weeks or so after that and now the a/c doesn't work again. Brought it back to MB and now they did a flourscent dye test and said they found a slow leak in the compressor and that it would cost approx. $1600. I checked through partsshop that it would cost approx. $400 for a new compressor. Is this possible to as DIY fix? Could someone go through it step by step and suggest what other parts to replace or how I should go about all this? Thank you