I went to the shop complaining of a leak on the hose from condenser to dryer @the condenser.

They, however fixed a leak they found on the other side of the dryer on the hose going to the expansion valve. They didnt even pull the grill and look at the condenser! I think its because they were very busy, and didnt half listen
to me.

When I picked the car up, the fitting at the condenser was still leaking. But it was no longer leaking oil, as before, but rather a liquid with a grayish color, which pooled on my garage floor that evening.

At the time I was more concerned with the fact that they hadnt made the repair that I had requested, more than I was concerned about what was coming out of my system. This reflects my lack of experience and knowledge concerning ac systems.

I returned the car to the shop the next day, where they made a new hose for the condenser to dryer line. The system was now tight and leak free.

The next day , however, I noticed a slight degradation in system performance and, more alarming to me, my new(and quiet)compressor was now making rumbling noises. Additionally the system cycles off and on more that before.

My conclusion is that a sealer was added to my ac, and that it was not a good thing. What can I expect now. The system is working, and is cooling, though slightly less efficient than it was, and then there is my noisy "new" compressor. What to do? What to do?

Thanks for listening. Any comments?

L.