I have had all sorts of A/C woes. Last year my mechanic had to tear the system apart to replace the compressor, rusty accumulator & orifice tube, along with various o-rings.

Now, it's leaking compressor oil at the coupling between the evaporator and high pressure pipe. Not badly--the A/C still has refrigerant even a few months since its recharge. The dealer tried replacing the o-ring, but it still leaks. They said the evaporator isn't a Volvo part since the pipes are copper (must have been replaced before I got the car), and they said since the high pressure pipe is a Volvo part, the 2 can't fit together perfectly, hence the leak. But the system was leak-free for several years before the problems last summer. Any ideas short of replacing the evaporator with a Volvo one?

Is this something I should just put up with? Are there any sealants I can glob all over the coupling or something to keep the oil in? Thanks for your help!

I would get a second opinion. If there's a will there's a way to get things to fit so there isn't a leak. Like you said, there was a time it wasn't leaking. Good luck!
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1998 S70 T5 Emarald Green Metallic, 2004 V70 2.5T Ruby Red, Previous Owner of Black '94 850 Turbo Wagon. My cars have been running so well lately they've got me worried.