Refridgerant leaking..

Cant find the leak. is there a problem with the ac system in the 97 model? I see a lot of these vans with the windows down so it leads me to think there is a problem. just wondering if someone knows of a common problem..... Thanks

Cant find the leak. is there a problem with the ac system in the 97 model? I see a lot of these vans with the windows down so it leads me to think there is a problem. just wondering if someone knows of a common problem..... Thanks

Other than an upgrade to the green o-rings, but 97 should likely have them, there is nothing common that I've seen. Add black-light dye into system and after driving for a few days, search with the light to inspect the system for the leak.