I've got issues with an A/C system. It has a leak. We've added the die and are going to replace the leaky o-ring here this weekend.

However, I'm not totally sure what fluids it takes. I'm assuming R-134a refrigerant. What about oil though? I don't think we'll loose any but I have no clue if we need it what to ad.

Also any other little quirks about the system would be nice to know. I've never done an A/C system on a European car. Just a little A/C work with Camaro's.

Thanks!