Hello guys, my air conditioning system has not been working for over two years now, because there is probably too little refrigerant in the system. There is a leak on the upper screw connection of the line to the capacitor, because there is everything full with yellow siff of the leak detector. My first thought was to replace the seal of the screw connection next weekend and then have the system refilled. Now I have noticed that there must still be refrigerants in the system (I have tried I had to pull this off first, of course. Before, however, I asked in the workshop for a short time what the new filling should cost with completely empty system. The information was +-130€, but it was certain that the screw connection was no longer tight, due to contact corrosion between the aluminium thread and the steel screw nut. The replacement of the capacitor was Can anyone confirm this here? I tried to find some information about the topic. Some seem to have had no problems solving (but are also posts from the ’00s), others had the thread on the capacitor completely gone and also the screw nut on the hose was taken away. As a tip I read to take a hydraulic screw connection, there perpendicular to the thread to saw in a slot and with it the thread of the screw nut after envies. Sounds like a good idea for me. In addition, I would just make the capacitor a new one, which is available from Nissens for just €67. 8A0 260 403 AA seems to be the right number for the 2.8, right? Does anyone know if there are new O-rings in the capacitor, or do I have to buy them directly from Audi? Edit: I don’t think they are there. Does anyone know the approx. price at Audi? Is it worth buying those in the accessories, are probably 3 different types Then there’s still the thing with d drier. Is this thing made of aluminium? If so, I am faced with the same problem…. Just keep my fingers off it, or do I have to change it after 21 years? Where is the throttle on the 2.8er? At the transition of the pipes to the spray wall? I should probably also exchange it. Thanks and greeting Sebastian